Replace redigo with redis-go

We are replacing the very outdated redigo Go module with the official
redis Go module, go-redis.

Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>

vendor/github.com/redis/go-redis/extra/rediscmd/v9/LICENSE

@@ -0,0 +1,25 @@
+Copyright (c) 2013 The github.com/redis/go-redis Authors.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/redis/go-redis/extra/rediscmd/v9/rediscmd.go

@@ -0,0 +1,149 @@
+package rediscmd
+
+import (
+	"encoding/hex"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+func CmdString(cmd redis.Cmder) string {
+	b := make([]byte, 0, 32)
+	b = AppendCmd(b, cmd)
+	return String(b)
+}
+
+func CmdsString(cmds []redis.Cmder) (string, string) {
+	const numCmdLimit = 100
+	const numNameLimit = 10
+
+	seen := make(map[string]struct{}, numNameLimit)
+	unqNames := make([]string, 0, numNameLimit)
+
+	b := make([]byte, 0, 32*len(cmds))
+
+	for i, cmd := range cmds {
+		if i > numCmdLimit {
+			break
+		}
+
+		if i > 0 {
+			b = append(b, '\n')
+		}
+		b = AppendCmd(b, cmd)
+
+		if len(unqNames) >= numNameLimit {
+			continue
+		}
+
+		name := cmd.FullName()
+		if _, ok := seen[name]; !ok {
+			seen[name] = struct{}{}
+			unqNames = append(unqNames, name)
+		}
+	}
+
+	summary := strings.Join(unqNames, " ")
+	return summary, String(b)
+}
+
+func AppendCmd(b []byte, cmd redis.Cmder) []byte {
+	const numArgLimit = 32
+
+	for i, arg := range cmd.Args() {
+		if i > numArgLimit {
+			break
+		}
+		if i > 0 {
+			b = append(b, ' ')
+		}
+		b = appendArg(b, arg)
+	}
+
+	if err := cmd.Err(); err != nil {
+		b = append(b, ": "...)
+		b = append(b, err.Error()...)
+	}
+
+	return b
+}
+
+func appendArg(b []byte, v interface{}) []byte {
+	const argLenLimit = 64
+
+	switch v := v.(type) {
+	case nil:
+		return append(b, "<nil>"...)
+	case string:
+		if len(v) > argLenLimit {
+			v = v[:argLenLimit]
+		}
+		return appendUTF8String(b, Bytes(v))
+	case []byte:
+		if len(v) > argLenLimit {
+			v = v[:argLenLimit]
+		}
+		return appendUTF8String(b, v)
+	case int:
+		return strconv.AppendInt(b, int64(v), 10)
+	case int8:
+		return strconv.AppendInt(b, int64(v), 10)
+	case int16:
+		return strconv.AppendInt(b, int64(v), 10)
+	case int32:
+		return strconv.AppendInt(b, int64(v), 10)
+	case int64:
+		return strconv.AppendInt(b, v, 10)
+	case uint:
+		return strconv.AppendUint(b, uint64(v), 10)
+	case uint8:
+		return strconv.AppendUint(b, uint64(v), 10)
+	case uint16:
+		return strconv.AppendUint(b, uint64(v), 10)
+	case uint32:
+		return strconv.AppendUint(b, uint64(v), 10)
+	case uint64:
+		return strconv.AppendUint(b, v, 10)
+	case float32:
+		return strconv.AppendFloat(b, float64(v), 'f', -1, 64)
+	case float64:
+		return strconv.AppendFloat(b, v, 'f', -1, 64)
+	case bool:
+		if v {
+			return append(b, "true"...)
+		}
+		return append(b, "false"...)
+	case time.Time:
+		return v.AppendFormat(b, time.RFC3339Nano)
+	default:
+		return append(b, fmt.Sprint(v)...)
+	}
+}
+
+func appendUTF8String(dst []byte, src []byte) []byte {
+	if isSimple(src) {
+		dst = append(dst, src...)
+		return dst
+	}
+
+	s := len(dst)
+	dst = append(dst, make([]byte, hex.EncodedLen(len(src)))...)
+	hex.Encode(dst[s:], src)
+	return dst
+}
+
+func isSimple(b []byte) bool {
+	for _, c := range b {
+		if !isSimpleByte(c) {
+			return false
+		}
+	}
+	return true
+}
+
+func isSimpleByte(c byte) bool {
+	return c >= 0x21 && c <= 0x7e
+}

vendor/github.com/redis/go-redis/extra/rediscmd/v9/safe.go

@@ -0,0 +1,12 @@
+//go:build appengine
+// +build appengine
+
+package rediscmd
+
+func String(b []byte) string {
+	return string(b)
+}
+
+func Bytes(s string) []byte {
+	return []byte(s)
+}

vendor/github.com/redis/go-redis/extra/rediscmd/v9/unsafe.go

@@ -0,0 +1,21 @@
+//go:build !appengine
+// +build !appengine
+
+package rediscmd
+
+import "unsafe"
+
+// String converts byte slice to string.
+func String(b []byte) string {
+	return *(*string)(unsafe.Pointer(&b))
+}
+
+// Bytes converts string to byte slice.
+func Bytes(s string) []byte {
+	return *(*[]byte)(unsafe.Pointer(
+		&struct {
+			string
+			Cap int
+		}{s, len(s)},
+	))
+}

vendor/github.com/redis/go-redis/extra/redisotel/v9/LICENSE

@@ -0,0 +1,25 @@
+Copyright (c) 2013 The github.com/redis/go-redis Authors.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/redis/go-redis/extra/redisotel/v9/README.md

@@ -0,0 +1,34 @@
+# OpenTelemetry instrumentation for go-redis
+
+## Installation
+
+```bash
+go get github.com/redis/go-redis/extra/redisotel/v9
+```
+
+## Usage
+
+Tracing is enabled by adding a hook:
+
+```go
+import (
+    "github.com/redis/go-redis/v9"
+    "github.com/redis/go-redis/extra/redisotel/v9"
+)
+
+rdb := rdb.NewClient(&rdb.Options{...})
+
+// Enable tracing instrumentation.
+if err := redisotel.InstrumentTracing(rdb); err != nil {
+	panic(err)
+}
+
+// Enable metrics instrumentation.
+if err := redisotel.InstrumentMetrics(rdb); err != nil {
+	panic(err)
+}
+```
+
+See [example](../../example/otel) and
+[Monitoring Go Redis Performance and Errors](https://redis.uptrace.dev/guide/go-redis-monitoring.html)
+for details.

vendor/github.com/redis/go-redis/extra/redisotel/v9/config.go

@@ -0,0 +1,138 @@
+package redisotel
+
+import (
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/metric"
+	semconv "go.opentelemetry.io/otel/semconv/v1.12.0"
+	"go.opentelemetry.io/otel/trace"
+)
+
+type config struct {
+	// Common options.
+
+	dbSystem string
+	attrs    []attribute.KeyValue
+
+	// Tracing options.
+
+	tp     trace.TracerProvider
+	tracer trace.Tracer
+
+	dbStmtEnabled bool
+
+	// Metrics options.
+
+	mp    metric.MeterProvider
+	meter metric.Meter
+
+	poolName string
+}
+
+type baseOption interface {
+	apply(conf *config)
+}
+
+type Option interface {
+	baseOption
+	tracing()
+	metrics()
+}
+
+type option func(conf *config)
+
+func (fn option) apply(conf *config) {
+	fn(conf)
+}
+
+func (fn option) tracing() {}
+
+func (fn option) metrics() {}
+
+func newConfig(opts ...baseOption) *config {
+	conf := &config{
+		dbSystem: "redis",
+		attrs:    []attribute.KeyValue{},
+
+		tp:            otel.GetTracerProvider(),
+		mp:            otel.GetMeterProvider(),
+		dbStmtEnabled: true,
+	}
+
+	for _, opt := range opts {
+		opt.apply(conf)
+	}
+
+	conf.attrs = append(conf.attrs, semconv.DBSystemKey.String(conf.dbSystem))
+
+	return conf
+}
+
+func WithDBSystem(dbSystem string) Option {
+	return option(func(conf *config) {
+		conf.dbSystem = dbSystem
+	})
+}
+
+// WithAttributes specifies additional attributes to be added to the span.
+func WithAttributes(attrs ...attribute.KeyValue) Option {
+	return option(func(conf *config) {
+		conf.attrs = append(conf.attrs, attrs...)
+	})
+}
+
+//------------------------------------------------------------------------------
+
+type TracingOption interface {
+	baseOption
+	tracing()
+}
+
+type tracingOption func(conf *config)
+
+var _ TracingOption = (*tracingOption)(nil)
+
+func (fn tracingOption) apply(conf *config) {
+	fn(conf)
+}
+
+func (fn tracingOption) tracing() {}
+
+// WithTracerProvider specifies a tracer provider to use for creating a tracer.
+// If none is specified, the global provider is used.
+func WithTracerProvider(provider trace.TracerProvider) TracingOption {
+	return tracingOption(func(conf *config) {
+		conf.tp = provider
+	})
+}
+
+// WithDBStatement tells the tracing hook not to log raw redis commands.
+func WithDBStatement(on bool) TracingOption {
+	return tracingOption(func(conf *config) {
+		conf.dbStmtEnabled = on
+	})
+}
+
+//------------------------------------------------------------------------------
+
+type MetricsOption interface {
+	baseOption
+	metrics()
+}
+
+type metricsOption func(conf *config)
+
+var _ MetricsOption = (*metricsOption)(nil)
+
+func (fn metricsOption) apply(conf *config) {
+	fn(conf)
+}
+
+func (fn metricsOption) metrics() {}
+
+// WithMeterProvider configures a metric.Meter used to create instruments.
+func WithMeterProvider(mp metric.MeterProvider) MetricsOption {
+	return metricsOption(func(conf *config) {
+		conf.mp = mp
+	})
+}

vendor/github.com/redis/go-redis/extra/redisotel/v9/metrics.go

@@ -0,0 +1,253 @@
+package redisotel
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/metric"
+)
+
+// InstrumentMetrics starts reporting OpenTelemetry Metrics.
+//
+// Based on https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/semantic_conventions/database-metrics.md
+func InstrumentMetrics(rdb redis.UniversalClient, opts ...MetricsOption) error {
+	baseOpts := make([]baseOption, len(opts))
+	for i, opt := range opts {
+		baseOpts[i] = opt
+	}
+	conf := newConfig(baseOpts...)
+
+	if conf.meter == nil {
+		conf.meter = conf.mp.Meter(
+			instrumName,
+			metric.WithInstrumentationVersion("semver:"+redis.Version()),
+		)
+	}
+
+	switch rdb := rdb.(type) {
+	case *redis.Client:
+		if conf.poolName == "" {
+			opt := rdb.Options()
+			conf.poolName = opt.Addr
+		}
+		conf.attrs = append(conf.attrs, attribute.String("pool.name", conf.poolName))
+
+		if err := reportPoolStats(rdb, conf); err != nil {
+			return err
+		}
+		if err := addMetricsHook(rdb, conf); err != nil {
+			return err
+		}
+		return nil
+	case *redis.ClusterClient:
+		rdb.OnNewNode(func(rdb *redis.Client) {
+			if conf.poolName == "" {
+				opt := rdb.Options()
+				conf.poolName = opt.Addr
+			}
+			conf.attrs = append(conf.attrs, attribute.String("pool.name", conf.poolName))
+
+			if err := reportPoolStats(rdb, conf); err != nil {
+				otel.Handle(err)
+			}
+			if err := addMetricsHook(rdb, conf); err != nil {
+				otel.Handle(err)
+			}
+		})
+		return nil
+	case *redis.Ring:
+		rdb.OnNewNode(func(rdb *redis.Client) {
+			if conf.poolName == "" {
+				opt := rdb.Options()
+				conf.poolName = opt.Addr
+			}
+			conf.attrs = append(conf.attrs, attribute.String("pool.name", conf.poolName))
+
+			if err := reportPoolStats(rdb, conf); err != nil {
+				otel.Handle(err)
+			}
+			if err := addMetricsHook(rdb, conf); err != nil {
+				otel.Handle(err)
+			}
+		})
+		return nil
+	default:
+		return fmt.Errorf("redisotel: %T not supported", rdb)
+	}
+}
+
+func reportPoolStats(rdb *redis.Client, conf *config) error {
+	labels := conf.attrs
+	idleAttrs := append(labels, attribute.String("state", "idle"))
+	usedAttrs := append(labels, attribute.String("state", "used"))
+
+	idleMax, err := conf.meter.Int64ObservableUpDownCounter(
+		"db.client.connections.idle.max",
+		metric.WithDescription("The maximum number of idle open connections allowed"),
+	)
+	if err != nil {
+		return err
+	}
+
+	idleMin, err := conf.meter.Int64ObservableUpDownCounter(
+		"db.client.connections.idle.min",
+		metric.WithDescription("The minimum number of idle open connections allowed"),
+	)
+	if err != nil {
+		return err
+	}
+
+	connsMax, err := conf.meter.Int64ObservableUpDownCounter(
+		"db.client.connections.max",
+		metric.WithDescription("The maximum number of open connections allowed"),
+	)
+	if err != nil {
+		return err
+	}
+
+	usage, err := conf.meter.Int64ObservableUpDownCounter(
+		"db.client.connections.usage",
+		metric.WithDescription("The number of connections that are currently in state described by the state attribute"),
+	)
+	if err != nil {
+		return err
+	}
+
+	timeouts, err := conf.meter.Int64ObservableUpDownCounter(
+		"db.client.connections.timeouts",
+		metric.WithDescription("The number of connection timeouts that have occurred trying to obtain a connection from the pool"),
+	)
+	if err != nil {
+		return err
+	}
+
+	redisConf := rdb.Options()
+	_, err = conf.meter.RegisterCallback(
+		func(ctx context.Context, o metric.Observer) error {
+			stats := rdb.PoolStats()
+
+			o.ObserveInt64(idleMax, int64(redisConf.MaxIdleConns), metric.WithAttributes(labels...))
+			o.ObserveInt64(idleMin, int64(redisConf.MinIdleConns), metric.WithAttributes(labels...))
+			o.ObserveInt64(connsMax, int64(redisConf.PoolSize), metric.WithAttributes(labels...))
+
+			o.ObserveInt64(usage, int64(stats.IdleConns), metric.WithAttributes(idleAttrs...))
+			o.ObserveInt64(usage, int64(stats.TotalConns-stats.IdleConns), metric.WithAttributes(usedAttrs...))
+
+			o.ObserveInt64(timeouts, int64(stats.Timeouts), metric.WithAttributes(labels...))
+			return nil
+		},
+		idleMax,
+		idleMin,
+		connsMax,
+		usage,
+		timeouts,
+	)
+
+	return err
+}
+
+func addMetricsHook(rdb *redis.Client, conf *config) error {
+	createTime, err := conf.meter.Float64Histogram(
+		"db.client.connections.create_time",
+		metric.WithDescription("The time it took to create a new connection."),
+		metric.WithUnit("ms"),
+	)
+	if err != nil {
+		return err
+	}
+
+	useTime, err := conf.meter.Float64Histogram(
+		"db.client.connections.use_time",
+		metric.WithDescription("The time between borrowing a connection and returning it to the pool."),
+		metric.WithUnit("ms"),
+	)
+	if err != nil {
+		return err
+	}
+
+	rdb.AddHook(&metricsHook{
+		createTime: createTime,
+		useTime:    useTime,
+		attrs:      conf.attrs,
+	})
+	return nil
+}
+
+type metricsHook struct {
+	createTime metric.Float64Histogram
+	useTime    metric.Float64Histogram
+	attrs      []attribute.KeyValue
+}
+
+var _ redis.Hook = (*metricsHook)(nil)
+
+func (mh *metricsHook) DialHook(hook redis.DialHook) redis.DialHook {
+	return func(ctx context.Context, network, addr string) (net.Conn, error) {
+		start := time.Now()
+
+		conn, err := hook(ctx, network, addr)
+
+		attrs := make([]attribute.KeyValue, 0, len(mh.attrs)+1)
+		attrs = append(attrs, mh.attrs...)
+		attrs = append(attrs, statusAttr(err))
+
+		mh.createTime.Record(ctx, milliseconds(time.Since(start)), metric.WithAttributes(attrs...))
+		return conn, err
+	}
+}
+
+func (mh *metricsHook) ProcessHook(hook redis.ProcessHook) redis.ProcessHook {
+	return func(ctx context.Context, cmd redis.Cmder) error {
+		start := time.Now()
+
+		err := hook(ctx, cmd)
+
+		dur := time.Since(start)
+
+		attrs := make([]attribute.KeyValue, 0, len(mh.attrs)+2)
+		attrs = append(attrs, mh.attrs...)
+		attrs = append(attrs, attribute.String("type", "command"))
+		attrs = append(attrs, statusAttr(err))
+
+		mh.useTime.Record(ctx, milliseconds(dur), metric.WithAttributes(attrs...))
+
+		return err
+	}
+}
+
+func (mh *metricsHook) ProcessPipelineHook(
+	hook redis.ProcessPipelineHook,
+) redis.ProcessPipelineHook {
+	return func(ctx context.Context, cmds []redis.Cmder) error {
+		start := time.Now()
+
+		err := hook(ctx, cmds)
+
+		dur := time.Since(start)
+
+		attrs := make([]attribute.KeyValue, 0, len(mh.attrs)+2)
+		attrs = append(attrs, mh.attrs...)
+		attrs = append(attrs, attribute.String("type", "pipeline"))
+		attrs = append(attrs, statusAttr(err))
+
+		mh.useTime.Record(ctx, milliseconds(dur), metric.WithAttributes(attrs...))
+
+		return err
+	}
+}
+
+func milliseconds(d time.Duration) float64 {
+	return float64(d) / float64(time.Millisecond)
+}
+
+func statusAttr(err error) attribute.KeyValue {
+	if err != nil {
+		return attribute.String("status", "error")
+	}
+	return attribute.String("status", "ok")
+}

vendor/github.com/redis/go-redis/extra/redisotel/v9/tracing.go

@@ -0,0 +1,215 @@
+package redisotel
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"runtime"
+	"strings"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.10.0"
+	"go.opentelemetry.io/otel/trace"
+
+	"github.com/redis/go-redis/extra/rediscmd/v9"
+	"github.com/redis/go-redis/v9"
+)
+
+const (
+	instrumName = "github.com/redis/go-redis/extra/redisotel"
+)
+
+func InstrumentTracing(rdb redis.UniversalClient, opts ...TracingOption) error {
+	switch rdb := rdb.(type) {
+	case *redis.Client:
+		opt := rdb.Options()
+		connString := formatDBConnString(opt.Network, opt.Addr)
+		rdb.AddHook(newTracingHook(connString, opts...))
+		return nil
+	case *redis.ClusterClient:
+		rdb.AddHook(newTracingHook("", opts...))
+
+		rdb.OnNewNode(func(rdb *redis.Client) {
+			opt := rdb.Options()
+			connString := formatDBConnString(opt.Network, opt.Addr)
+			rdb.AddHook(newTracingHook(connString, opts...))
+		})
+		return nil
+	case *redis.Ring:
+		rdb.AddHook(newTracingHook("", opts...))
+
+		rdb.OnNewNode(func(rdb *redis.Client) {
+			opt := rdb.Options()
+			connString := formatDBConnString(opt.Network, opt.Addr)
+			rdb.AddHook(newTracingHook(connString, opts...))
+		})
+		return nil
+	default:
+		return fmt.Errorf("redisotel: %T not supported", rdb)
+	}
+}
+
+type tracingHook struct {
+	conf *config
+
+	spanOpts []trace.SpanStartOption
+}
+
+var _ redis.Hook = (*tracingHook)(nil)
+
+func newTracingHook(connString string, opts ...TracingOption) *tracingHook {
+	baseOpts := make([]baseOption, len(opts))
+	for i, opt := range opts {
+		baseOpts[i] = opt
+	}
+	conf := newConfig(baseOpts...)
+
+	if conf.tracer == nil {
+		conf.tracer = conf.tp.Tracer(
+			instrumName,
+			trace.WithInstrumentationVersion("semver:"+redis.Version()),
+		)
+	}
+	if connString != "" {
+		conf.attrs = append(conf.attrs, semconv.DBConnectionStringKey.String(connString))
+	}
+
+	return &tracingHook{
+		conf: conf,
+
+		spanOpts: []trace.SpanStartOption{
+			trace.WithSpanKind(trace.SpanKindClient),
+			trace.WithAttributes(conf.attrs...),
+		},
+	}
+}
+
+func (th *tracingHook) DialHook(hook redis.DialHook) redis.DialHook {
+	return func(ctx context.Context, network, addr string) (net.Conn, error) {
+		if !trace.SpanFromContext(ctx).IsRecording() {
+			return hook(ctx, network, addr)
+		}
+
+		ctx, span := th.conf.tracer.Start(ctx, "redis.dial", th.spanOpts...)
+		defer span.End()
+
+		conn, err := hook(ctx, network, addr)
+		if err != nil {
+			recordError(span, err)
+			return nil, err
+		}
+		return conn, nil
+	}
+}
+
+func (th *tracingHook) ProcessHook(hook redis.ProcessHook) redis.ProcessHook {
+	return func(ctx context.Context, cmd redis.Cmder) error {
+		if !trace.SpanFromContext(ctx).IsRecording() {
+			return hook(ctx, cmd)
+		}
+
+		fn, file, line := funcFileLine("github.com/redis/go-redis")
+
+		attrs := make([]attribute.KeyValue, 0, 8)
+		attrs = append(attrs,
+			semconv.CodeFunctionKey.String(fn),
+			semconv.CodeFilepathKey.String(file),
+			semconv.CodeLineNumberKey.Int(line),
+		)
+
+		if th.conf.dbStmtEnabled {
+			cmdString := rediscmd.CmdString(cmd)
+			attrs = append(attrs, semconv.DBStatementKey.String(cmdString))
+		}
+
+		opts := th.spanOpts
+		opts = append(opts, trace.WithAttributes(attrs...))
+
+		ctx, span := th.conf.tracer.Start(ctx, cmd.FullName(), opts...)
+		defer span.End()
+
+		if err := hook(ctx, cmd); err != nil {
+			recordError(span, err)
+			return err
+		}
+		return nil
+	}
+}
+
+func (th *tracingHook) ProcessPipelineHook(
+	hook redis.ProcessPipelineHook,
+) redis.ProcessPipelineHook {
+	return func(ctx context.Context, cmds []redis.Cmder) error {
+		if !trace.SpanFromContext(ctx).IsRecording() {
+			return hook(ctx, cmds)
+		}
+
+		fn, file, line := funcFileLine("github.com/redis/go-redis")
+
+		attrs := make([]attribute.KeyValue, 0, 8)
+		attrs = append(attrs,
+			semconv.CodeFunctionKey.String(fn),
+			semconv.CodeFilepathKey.String(file),
+			semconv.CodeLineNumberKey.Int(line),
+			attribute.Int("db.redis.num_cmd", len(cmds)),
+		)
+
+		summary, cmdsString := rediscmd.CmdsString(cmds)
+		if th.conf.dbStmtEnabled {
+			attrs = append(attrs, semconv.DBStatementKey.String(cmdsString))
+		}
+
+		opts := th.spanOpts
+		opts = append(opts, trace.WithAttributes(attrs...))
+
+		ctx, span := th.conf.tracer.Start(ctx, "redis.pipeline "+summary, opts...)
+		defer span.End()
+
+		if err := hook(ctx, cmds); err != nil {
+			recordError(span, err)
+			return err
+		}
+		return nil
+	}
+}
+
+func recordError(span trace.Span, err error) {
+	if err != redis.Nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, err.Error())
+	}
+}
+
+func formatDBConnString(network, addr string) string {
+	if network == "tcp" {
+		network = "redis"
+	}
+	return fmt.Sprintf("%s://%s", network, addr)
+}
+
+func funcFileLine(pkg string) (string, string, int) {
+	const depth = 16
+	var pcs [depth]uintptr
+	n := runtime.Callers(3, pcs[:])
+	ff := runtime.CallersFrames(pcs[:n])
+
+	var fn, file string
+	var line int
+	for {
+		f, ok := ff.Next()
+		if !ok {
+			break
+		}
+		fn, file, line = f.Function, f.File, f.Line
+		if !strings.Contains(fn, pkg) {
+			break
+		}
+	}
+
+	if ind := strings.LastIndexByte(fn, '/'); ind != -1 {
+		fn = fn[ind+1:]
+	}
+
+	return fn, file, line
+}

vendor/github.com/redis/go-redis/v9/.gitignore

@@ -0,0 +1,4 @@
+*.rdb
+testdata/*
+.idea/
+.DS_Store

vendor/github.com/redis/go-redis/v9/.golangci.yml

@@ -0,0 +1,4 @@
+run:
+  concurrency: 8
+  deadline: 5m
+  tests: false

vendor/github.com/redis/go-redis/v9/.prettierrc.yml

@@ -0,0 +1,4 @@
+semi: false
+singleQuote: true
+proseWrap: always
+printWidth: 100

vendor/github.com/redis/go-redis/v9/CHANGELOG.md

@@ -0,0 +1,124 @@
+## [9.0.5](https://github.com/redis/go-redis/compare/v9.0.4...v9.0.5) (2023-05-29)
+
+
+### Features
+
+* Add ACL LOG ([#2536](https://github.com/redis/go-redis/issues/2536)) ([31ba855](https://github.com/redis/go-redis/commit/31ba855ddebc38fbcc69a75d9d4fb769417cf602))
+* add field protocol to setupClusterQueryParams ([#2600](https://github.com/redis/go-redis/issues/2600)) ([840c25c](https://github.com/redis/go-redis/commit/840c25cb6f320501886a82a5e75f47b491e46fbe))
+* add protocol option ([#2598](https://github.com/redis/go-redis/issues/2598)) ([3917988](https://github.com/redis/go-redis/commit/391798880cfb915c4660f6c3ba63e0c1a459e2af))
+
+
+
+## [9.0.4](https://github.com/redis/go-redis/compare/v9.0.3...v9.0.4) (2023-05-01)
+
+
+### Bug Fixes
+
+* reader float parser ([#2513](https://github.com/redis/go-redis/issues/2513)) ([46f2450](https://github.com/redis/go-redis/commit/46f245075e6e3a8bd8471f9ca67ea95fd675e241))
+
+
+### Features
+
+* add client info command ([#2483](https://github.com/redis/go-redis/issues/2483)) ([b8c7317](https://github.com/redis/go-redis/commit/b8c7317cc6af444603731f7017c602347c0ba61e))
+* no longer verify HELLO error messages ([#2515](https://github.com/redis/go-redis/issues/2515)) ([7b4f217](https://github.com/redis/go-redis/commit/7b4f2179cb5dba3d3c6b0c6f10db52b837c912c8))
+* read the structure to increase the judgment of the omitempty op… ([#2529](https://github.com/redis/go-redis/issues/2529)) ([37c057b](https://github.com/redis/go-redis/commit/37c057b8e597c5e8a0e372337f6a8ad27f6030af))
+
+
+
+## [9.0.3](https://github.com/redis/go-redis/compare/v9.0.2...v9.0.3) (2023-04-02)
+
+### New Features
+
+- feat(scan): scan time.Time sets the default decoding (#2413)
+- Add support for CLUSTER LINKS command (#2504)
+- Add support for acl dryrun command (#2502)
+- Add support for COMMAND GETKEYS & COMMAND GETKEYSANDFLAGS (#2500)
+- Add support for LCS Command (#2480)
+- Add support for BZMPOP (#2456)
+- Adding support for ZMPOP command (#2408)
+- Add support for LMPOP (#2440)
+- feat: remove pool unused fields (#2438)
+- Expiretime and PExpireTime (#2426)
+- Implement `FUNCTION` group of commands (#2475)
+- feat(zadd): add ZAddLT and ZAddGT (#2429)
+- Add: Support for COMMAND LIST command (#2491)
+- Add support for BLMPOP (#2442)
+- feat: check pipeline.Do to prevent confusion with Exec (#2517)
+- Function stats, function kill, fcall and fcall_ro (#2486)
+- feat: Add support for CLUSTER SHARDS command (#2507)
+- feat(cmd): support for adding byte,bit parameters to the bitpos command (#2498)
+
+### Fixed
+
+- fix: eval api cmd.SetFirstKeyPos (#2501)
+- fix: limit the number of connections created (#2441)
+- fixed #2462  v9 continue support dragonfly,  it's Hello command return "NOAUTH Authentication required" error (#2479)
+- Fix for internal/hscan/structmap.go:89:23: undefined: reflect.Pointer (#2458)
+- fix: group lag can be null (#2448)
+
+### Maintenance
+
+- Updating to the latest version of redis (#2508)
+- Allowing for running tests on a port other than the fixed 6380 (#2466)
+- redis 7.0.8 in tests (#2450)
+- docs: Update redisotel example for v9 (#2425)
+- chore: update go mod, Upgrade golang.org/x/net version to 0.7.0 (#2476)
+- chore: add Chinese translation (#2436)
+- chore(deps): bump github.com/bsm/gomega from 1.20.0 to 1.26.0 (#2421)
+- chore(deps): bump github.com/bsm/ginkgo/v2 from 2.5.0 to 2.7.0 (#2420)
+- chore(deps): bump actions/setup-go from 3 to 4 (#2495)
+- docs: add instructions for the HSet api (#2503)
+- docs: add reading lag field comment (#2451)
+- test: update go mod before testing(go mod tidy) (#2423)
+- docs: fix comment typo (#2505)
+- test: remove testify (#2463)
+- refactor: change ListElementCmd to KeyValuesCmd. (#2443)
+- fix(appendArg): appendArg case special type (#2489)
+
+## [9.0.2](https://github.com/redis/go-redis/compare/v9.0.1...v9.0.2) (2023-02-01)
+
+### Features
+
+* upgrade OpenTelemetry, use the new metrics API. ([#2410](https://github.com/redis/go-redis/issues/2410)) ([e29e42c](https://github.com/redis/go-redis/commit/e29e42cde2755ab910d04185025dc43ce6f59c65))
+
+## v9 2023-01-30
+
+### Breaking
+
+- Changed Pipelines to not be thread-safe any more.
+
+### Added
+
+- Added support for [RESP3](https://github.com/antirez/RESP3/blob/master/spec.md) protocol. It was
+  contributed by @monkey92t who has done the majority of work in this release.
+- Added `ContextTimeoutEnabled` option that controls whether the client respects context timeouts
+  and deadlines. See
+  [Redis Timeouts](https://redis.uptrace.dev/guide/go-redis-debugging.html#timeouts) for details.
+- Added `ParseClusterURL` to parse URLs into `ClusterOptions`, for example,
+  `redis://user:password@localhost:6789?dial_timeout=3&read_timeout=6s&addr=localhost:6790&addr=localhost:6791`.
+- Added metrics instrumentation using `redisotel.IstrumentMetrics`. See
+  [documentation](https://redis.uptrace.dev/guide/go-redis-monitoring.html)
+- Added `redis.HasErrorPrefix` to help working with errors.
+
+### Changed
+
+- Removed asynchronous cancellation based on the context timeout. It was racy in v8 and is
+  completely gone in v9.
+- Reworked hook interface and added `DialHook`.
+- Replaced `redisotel.NewTracingHook` with `redisotel.InstrumentTracing`. See
+  [example](example/otel) and
+  [documentation](https://redis.uptrace.dev/guide/go-redis-monitoring.html).
+- Replaced `*redis.Z` with `redis.Z` since it is small enough to be passed as value without making
+  an allocation.
+- Renamed the option `MaxConnAge` to `ConnMaxLifetime`.
+- Renamed the option `IdleTimeout` to `ConnMaxIdleTime`.
+- Removed connection reaper in favor of `MaxIdleConns`.
+- Removed `WithContext` since `context.Context` can be passed directly as an arg.
+- Removed `Pipeline.Close` since there is no real need to explicitly manage pipeline resources and
+  it can be safely reused via `sync.Pool` etc. `Pipeline.Discard` is still available if you want to
+  reset commands for some reason.
+
+### Fixed
+
+- Improved and fixed pipeline retries.
+- As usually, added support for more commands and fixed some bugs.

vendor/github.com/redis/go-redis/v9/LICENSE

@@ -0,0 +1,25 @@
+Copyright (c) 2013 The github.com/redis/go-redis Authors.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/redis/go-redis/v9/Makefile

@@ -0,0 +1,41 @@
+GO_MOD_DIRS := $(shell find . -type f -name 'go.mod' -exec dirname {} \; | sort)
+
+test: testdeps
+	set -e; for dir in $(GO_MOD_DIRS); do \
+	  echo "go test in $${dir}"; \
+	  (cd "$${dir}" && \
+	    go mod tidy -compat=1.18 && \
+	    go test && \
+	    go test ./... -short -race && \
+	    go test ./... -run=NONE -bench=. -benchmem && \
+	    env GOOS=linux GOARCH=386 go test && \
+	    go vet); \
+	done
+	cd internal/customvet && go build .
+	go vet -vettool ./internal/customvet/customvet
+
+testdeps: testdata/redis/src/redis-server
+
+bench: testdeps
+	go test ./... -test.run=NONE -test.bench=. -test.benchmem
+
+.PHONY: all test testdeps bench
+
+testdata/redis:
+	mkdir -p $@
+	wget -qO- https://download.redis.io/releases/redis-7.2-rc3.tar.gz | tar xvz --strip-components=1 -C $@
+
+testdata/redis/src/redis-server: testdata/redis
+	cd $< && make all
+
+fmt:
+	gofmt -w -s ./
+	goimports -w  -local github.com/redis/go-redis ./
+
+go_mod_tidy:
+	set -e; for dir in $(GO_MOD_DIRS); do \
+	  echo "go mod tidy in $${dir}"; \
+	  (cd "$${dir}" && \
+	    go get -u ./... && \
+	    go mod tidy -compat=1.18); \
+	done

vendor/github.com/redis/go-redis/v9/README.md

@@ -0,0 +1,224 @@
+# Redis client for Go
+
+[![build workflow](https://github.com/redis/go-redis/actions/workflows/build.yml/badge.svg)](https://github.com/redis/go-redis/actions)
+[![PkgGoDev](https://pkg.go.dev/badge/github.com/redis/go-redis/v9)](https://pkg.go.dev/github.com/redis/go-redis/v9?tab=doc)
+[![Documentation](https://img.shields.io/badge/redis-documentation-informational)](https://redis.uptrace.dev/)
+[![Chat](https://discordapp.com/api/guilds/752070105847955518/widget.png)](https://discord.gg/rWtp5Aj)
+
+> go-redis is brought to you by :star: [**uptrace/uptrace**](https://github.com/uptrace/uptrace).
+> Uptrace is an open-source APM tool that supports distributed tracing, metrics, and logs. You can
+> use it to monitor applications and set up automatic alerts to receive notifications via email,
+> Slack, Telegram, and others.
+>
+> See [OpenTelemetry](example/otel) example which demonstrates how you can use Uptrace to monitor
+> go-redis.
+
+## Documentation
+
+- [English](https://redis.uptrace.dev)
+- [简体中文](https://redis.uptrace.dev/zh/)
+
+## Resources
+
+- [Discussions](https://github.com/redis/go-redis/discussions)
+- [Chat](https://discord.gg/rWtp5Aj)
+- [Reference](https://pkg.go.dev/github.com/redis/go-redis/v9)
+- [Examples](https://pkg.go.dev/github.com/redis/go-redis/v9#pkg-examples)
+
+## Ecosystem
+
+- [Redis Mock](https://github.com/go-redis/redismock)
+- [Distributed Locks](https://github.com/bsm/redislock)
+- [Redis Cache](https://github.com/go-redis/cache)
+- [Rate limiting](https://github.com/go-redis/redis_rate)
+
+This client also works with [Kvrocks](https://github.com/apache/incubator-kvrocks), a distributed
+key value NoSQL database that uses RocksDB as storage engine and is compatible with Redis protocol.
+
+## Features
+
+- Redis 3 commands except QUIT, MONITOR, and SYNC.
+- Automatic connection pooling with
+- [Pub/Sub](https://redis.uptrace.dev/guide/go-redis-pubsub.html).
+- [Pipelines and transactions](https://redis.uptrace.dev/guide/go-redis-pipelines.html).
+- [Scripting](https://redis.uptrace.dev/guide/lua-scripting.html).
+- [Redis Sentinel](https://redis.uptrace.dev/guide/go-redis-sentinel.html).
+- [Redis Cluster](https://redis.uptrace.dev/guide/go-redis-cluster.html).
+- [Redis Ring](https://redis.uptrace.dev/guide/ring.html).
+- [Redis Performance Monitoring](https://redis.uptrace.dev/guide/redis-performance-monitoring.html).
+- [Redis Probabilistic [RedisStack]](https://redis.io/docs/data-types/probabilistic/)
+
+## Installation
+
+go-redis supports 2 last Go versions and requires a Go version with
+[modules](https://github.com/golang/go/wiki/Modules) support. So make sure to initialize a Go
+module:
+
+```shell
+go mod init github.com/my/repo
+```
+
+Then install go-redis/**v9**:
+
+```shell
+go get github.com/redis/go-redis/v9
+```
+
+## Quickstart
+
+```go
+import (
+    "context"
+    "github.com/redis/go-redis/v9"
+    "fmt"
+)
+
+var ctx = context.Background()
+
+func ExampleClient() {
+    rdb := redis.NewClient(&redis.Options{
+        Addr:     "localhost:6379",
+        Password: "", // no password set
+        DB:       0,  // use default DB
+    })
+
+    err := rdb.Set(ctx, "key", "value", 0).Err()
+    if err != nil {
+        panic(err)
+    }
+
+    val, err := rdb.Get(ctx, "key").Result()
+    if err != nil {
+        panic(err)
+    }
+    fmt.Println("key", val)
+
+    val2, err := rdb.Get(ctx, "key2").Result()
+    if err == redis.Nil {
+        fmt.Println("key2 does not exist")
+    } else if err != nil {
+        panic(err)
+    } else {
+        fmt.Println("key2", val2)
+    }
+    // Output: key value
+    // key2 does not exist
+}
+```
+
+The above can be modified to specify the version of the RESP protocol by adding the `protocol` option to the `Options` struct:
+
+```go
+    rdb := redis.NewClient(&redis.Options{
+        Addr:     "localhost:6379",
+        Password: "", // no password set
+        DB:       0,  // use default DB
+        Protocol: 3, // specify 2 for RESP 2 or 3 for RESP 3
+    })
+
+```
+
+### Connecting via a redis url
+
+go-redis also supports connecting via the [redis uri specification](https://github.com/redis/redis-specifications/tree/master/uri/redis.txt). The example below demonstrates how the connection can easily be configured using a string, adhering to this specification.
+
+```go
+import (
+    "context"
+    "github.com/redis/go-redis/v9"
+    "fmt"
+)
+
+var ctx = context.Background()
+
+func ExampleClient() {
+    url := "redis://localhost:6379?password=hello&protocol=3"
+    opts, err := redis.ParseURL(url)
+    if err != nil {
+        panic(err)
+    }
+    rdb := redis.NewClient(opts)
+```
+
+## Look and feel
+
+Some corner cases:
+
+```go
+// SET key value EX 10 NX
+set, err := rdb.SetNX(ctx, "key", "value", 10*time.Second).Result()
+
+// SET key value keepttl NX
+set, err := rdb.SetNX(ctx, "key", "value", redis.KeepTTL).Result()
+
+// SORT list LIMIT 0 2 ASC
+vals, err := rdb.Sort(ctx, "list", &redis.Sort{Offset: 0, Count: 2, Order: "ASC"}).Result()
+
+// ZRANGEBYSCORE zset -inf +inf WITHSCORES LIMIT 0 2
+vals, err := rdb.ZRangeByScoreWithScores(ctx, "zset", &redis.ZRangeBy{
+    Min: "-inf",
+    Max: "+inf",
+    Offset: 0,
+    Count: 2,
+}).Result()
+
+// ZINTERSTORE out 2 zset1 zset2 WEIGHTS 2 3 AGGREGATE SUM
+vals, err := rdb.ZInterStore(ctx, "out", &redis.ZStore{
+    Keys: []string{"zset1", "zset2"},
+    Weights: []int64{2, 3}
+}).Result()
+
+// EVAL "return {KEYS[1],ARGV[1]}" 1 "key" "hello"
+vals, err := rdb.Eval(ctx, "return {KEYS[1],ARGV[1]}", []string{"key"}, "hello").Result()
+
+// custom command
+res, err := rdb.Do(ctx, "set", "key", "value").Result()
+```
+
+## Run the test
+
+go-redis will start a redis-server and run the test cases.
+
+The paths of redis-server bin file and redis config file are defined in `main_test.go`:
+
+```go
+var (
+	redisServerBin, _  = filepath.Abs(filepath.Join("testdata", "redis", "src", "redis-server"))
+	redisServerConf, _ = filepath.Abs(filepath.Join("testdata", "redis", "redis.conf"))
+)
+```
+
+For local testing, you can change the variables to refer to your local files, or create a soft link
+to the corresponding folder for redis-server and copy the config file to `testdata/redis/`:
+
+```shell
+ln -s /usr/bin/redis-server ./go-redis/testdata/redis/src
+cp ./go-redis/testdata/redis.conf ./go-redis/testdata/redis/
+```
+
+Lastly, run:
+
+```shell
+go test
+```
+
+Another option is to run your specific tests with an already running redis. The example below, tests against a redis running on port 9999.:
+
+```shell
+REDIS_PORT=9999 go test <your options>
+```
+
+## See also
+
+- [Golang ORM](https://bun.uptrace.dev) for PostgreSQL, MySQL, MSSQL, and SQLite
+- [Golang PostgreSQL](https://bun.uptrace.dev/postgres/)
+- [Golang HTTP router](https://bunrouter.uptrace.dev/)
+- [Golang ClickHouse ORM](https://github.com/uptrace/go-clickhouse)
+
+## Contributors
+
+Thanks to all the people who already contributed!
+
+<a href="https://github.com/redis/go-redis/graphs/contributors">
+  <img src="https://contributors-img.web.app/image?repo=redis/go-redis" />
+</a>

vendor/github.com/redis/go-redis/v9/RELEASING.md

@@ -0,0 +1,15 @@
+# Releasing
+
+1. Run `release.sh` script which updates versions in go.mod files and pushes a new branch to GitHub:
+
+```shell
+TAG=v1.0.0 ./scripts/release.sh
+```
+
+2. Open a pull request and wait for the build to finish.
+
+3. Merge the pull request and run `tag.sh` to create tags for packages:
+
+```shell
+TAG=v1.0.0 ./scripts/tag.sh
+```

vendor/github.com/redis/go-redis/v9/cluster_commands.go

@@ -0,0 +1,109 @@
+package redis
+
+import (
+	"context"
+	"sync"
+	"sync/atomic"
+)
+
+func (c *ClusterClient) DBSize(ctx context.Context) *IntCmd {
+	cmd := NewIntCmd(ctx, "dbsize")
+	_ = c.withProcessHook(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		var size int64
+		err := c.ForEachMaster(ctx, func(ctx context.Context, master *Client) error {
+			n, err := master.DBSize(ctx).Result()
+			if err != nil {
+				return err
+			}
+			atomic.AddInt64(&size, n)
+			return nil
+		})
+		if err != nil {
+			cmd.SetErr(err)
+		} else {
+			cmd.val = size
+		}
+		return nil
+	})
+	return cmd
+}
+
+func (c *ClusterClient) ScriptLoad(ctx context.Context, script string) *StringCmd {
+	cmd := NewStringCmd(ctx, "script", "load", script)
+	_ = c.withProcessHook(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		var mu sync.Mutex
+		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
+			val, err := shard.ScriptLoad(ctx, script).Result()
+			if err != nil {
+				return err
+			}
+
+			mu.Lock()
+			if cmd.Val() == "" {
+				cmd.val = val
+			}
+			mu.Unlock()
+
+			return nil
+		})
+		if err != nil {
+			cmd.SetErr(err)
+		}
+		return nil
+	})
+	return cmd
+}
+
+func (c *ClusterClient) ScriptFlush(ctx context.Context) *StatusCmd {
+	cmd := NewStatusCmd(ctx, "script", "flush")
+	_ = c.withProcessHook(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
+			return shard.ScriptFlush(ctx).Err()
+		})
+		if err != nil {
+			cmd.SetErr(err)
+		}
+		return nil
+	})
+	return cmd
+}
+
+func (c *ClusterClient) ScriptExists(ctx context.Context, hashes ...string) *BoolSliceCmd {
+	args := make([]interface{}, 2+len(hashes))
+	args[0] = "script"
+	args[1] = "exists"
+	for i, hash := range hashes {
+		args[2+i] = hash
+	}
+	cmd := NewBoolSliceCmd(ctx, args...)
+
+	result := make([]bool, len(hashes))
+	for i := range result {
+		result[i] = true
+	}
+
+	_ = c.withProcessHook(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		var mu sync.Mutex
+		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
+			val, err := shard.ScriptExists(ctx, hashes...).Result()
+			if err != nil {
+				return err
+			}
+
+			mu.Lock()
+			for i, v := range val {
+				result[i] = result[i] && v
+			}
+			mu.Unlock()
+
+			return nil
+		})
+		if err != nil {
+			cmd.SetErr(err)
+		} else {
+			cmd.val = result
+		}
+		return nil
+	})
+	return cmd
+}

vendor/github.com/redis/go-redis/v9/doc.go

@@ -0,0 +1,4 @@
+/*
+Package redis implements a Redis client.
+*/
+package redis

vendor/github.com/redis/go-redis/v9/error.go

@@ -0,0 +1,155 @@
+package redis
+
+import (
+	"context"
+	"io"
+	"net"
+	"strings"
+
+	"github.com/redis/go-redis/v9/internal/pool"
+	"github.com/redis/go-redis/v9/internal/proto"
+)
+
+// ErrClosed performs any operation on the closed client will return this error.
+var ErrClosed = pool.ErrClosed
+
+// HasErrorPrefix checks if the err is a Redis error and the message contains a prefix.
+func HasErrorPrefix(err error, prefix string) bool {
+	err, ok := err.(Error)
+	if !ok {
+		return false
+	}
+	msg := err.Error()
+	msg = strings.TrimPrefix(msg, "ERR ") // KVRocks adds such prefix
+	return strings.HasPrefix(msg, prefix)
+}
+
+type Error interface {
+	error
+
+	// RedisError is a no-op function but
+	// serves to distinguish types that are Redis
+	// errors from ordinary errors: a type is a
+	// Redis error if it has a RedisError method.
+	RedisError()
+}
+
+var _ Error = proto.RedisError("")
+
+func shouldRetry(err error, retryTimeout bool) bool {
+	switch err {
+	case io.EOF, io.ErrUnexpectedEOF:
+		return true
+	case nil, context.Canceled, context.DeadlineExceeded:
+		return false
+	}
+
+	if v, ok := err.(timeoutError); ok {
+		if v.Timeout() {
+			return retryTimeout
+		}
+		return true
+	}
+
+	s := err.Error()
+	if s == "ERR max number of clients reached" {
+		return true
+	}
+	if strings.HasPrefix(s, "LOADING ") {
+		return true
+	}
+	if strings.HasPrefix(s, "READONLY ") {
+		return true
+	}
+	if strings.HasPrefix(s, "CLUSTERDOWN ") {
+		return true
+	}
+	if strings.HasPrefix(s, "TRYAGAIN ") {
+		return true
+	}
+
+	return false
+}
+
+func isRedisError(err error) bool {
+	_, ok := err.(proto.RedisError)
+	return ok
+}
+
+func isBadConn(err error, allowTimeout bool, addr string) bool {
+	switch err {
+	case nil:
+		return false
+	case context.Canceled, context.DeadlineExceeded:
+		return true
+	}
+
+	if isRedisError(err) {
+		switch {
+		case isReadOnlyError(err):
+			// Close connections in read only state in case domain addr is used
+			// and domain resolves to a different Redis Server. See #790.
+			return true
+		case isMovedSameConnAddr(err, addr):
+			// Close connections when we are asked to move to the same addr
+			// of the connection. Force a DNS resolution when all connections
+			// of the pool are recycled
+			return true
+		default:
+			return false
+		}
+	}
+
+	if allowTimeout {
+		if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
+			return false
+		}
+	}
+
+	return true
+}
+
+func isMovedError(err error) (moved bool, ask bool, addr string) {
+	if !isRedisError(err) {
+		return
+	}
+
+	s := err.Error()
+	switch {
+	case strings.HasPrefix(s, "MOVED "):
+		moved = true
+	case strings.HasPrefix(s, "ASK "):
+		ask = true
+	default:
+		return
+	}
+
+	ind := strings.LastIndex(s, " ")
+	if ind == -1 {
+		return false, false, ""
+	}
+	addr = s[ind+1:]
+	return
+}
+
+func isLoadingError(err error) bool {
+	return strings.HasPrefix(err.Error(), "LOADING ")
+}
+
+func isReadOnlyError(err error) bool {
+	return strings.HasPrefix(err.Error(), "READONLY ")
+}
+
+func isMovedSameConnAddr(err error, addr string) bool {
+	redisError := err.Error()
+	if !strings.HasPrefix(redisError, "MOVED ") {
+		return false
+	}
+	return strings.HasSuffix(redisError, " "+addr)
+}
+
+//------------------------------------------------------------------------------
+
+type timeoutError interface {
+	Timeout() bool
+}

vendor/github.com/redis/go-redis/v9/internal/arg.go

@@ -0,0 +1,58 @@
+package internal
+
+import (
+	"fmt"
+	"strconv"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal/util"
+)
+
+func AppendArg(b []byte, v interface{}) []byte {
+	switch v := v.(type) {
+	case nil:
+		return append(b, "<nil>"...)
+	case string:
+		return appendUTF8String(b, util.StringToBytes(v))
+	case []byte:
+		return appendUTF8String(b, v)
+	case int:
+		return strconv.AppendInt(b, int64(v), 10)
+	case int8:
+		return strconv.AppendInt(b, int64(v), 10)
+	case int16:
+		return strconv.AppendInt(b, int64(v), 10)
+	case int32:
+		return strconv.AppendInt(b, int64(v), 10)
+	case int64:
+		return strconv.AppendInt(b, v, 10)
+	case uint:
+		return strconv.AppendUint(b, uint64(v), 10)
+	case uint8:
+		return strconv.AppendUint(b, uint64(v), 10)
+	case uint16:
+		return strconv.AppendUint(b, uint64(v), 10)
+	case uint32:
+		return strconv.AppendUint(b, uint64(v), 10)
+	case uint64:
+		return strconv.AppendUint(b, v, 10)
+	case float32:
+		return strconv.AppendFloat(b, float64(v), 'f', -1, 64)
+	case float64:
+		return strconv.AppendFloat(b, v, 'f', -1, 64)
+	case bool:
+		if v {
+			return append(b, "true"...)
+		}
+		return append(b, "false"...)
+	case time.Time:
+		return v.AppendFormat(b, time.RFC3339Nano)
+	default:
+		return append(b, fmt.Sprint(v)...)
+	}
+}
+
+func appendUTF8String(dst []byte, src []byte) []byte {
+	dst = append(dst, src...)
+	return dst
+}

vendor/github.com/redis/go-redis/v9/internal/hashtag/hashtag.go

@@ -0,0 +1,78 @@
+package hashtag
+
+import (
+	"strings"
+
+	"github.com/redis/go-redis/v9/internal/rand"
+)
+
+const slotNumber = 16384
+
+// CRC16 implementation according to CCITT standards.
+// Copyright 2001-2010 Georges Menie (www.menie.org)
+// Copyright 2013 The Go Authors. All rights reserved.
+// http://redis.io/topics/cluster-spec#appendix-a-crc16-reference-implementation-in-ansi-c
+var crc16tab = [256]uint16{
+	0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
+	0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
+	0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
+	0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
+	0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
+	0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
+	0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
+	0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
+	0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
+	0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
+	0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
+	0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
+	0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
+	0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
+	0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
+	0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
+	0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
+	0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
+	0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
+	0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
+	0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
+	0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+	0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
+	0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
+	0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
+	0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
+	0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
+	0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
+	0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
+	0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
+	0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
+	0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,
+}
+
+func Key(key string) string {
+	if s := strings.IndexByte(key, '{'); s > -1 {
+		if e := strings.IndexByte(key[s+1:], '}'); e > 0 {
+			return key[s+1 : s+e+1]
+		}
+	}
+	return key
+}
+
+func RandomSlot() int {
+	return rand.Intn(slotNumber)
+}
+
+// Slot returns a consistent slot number between 0 and 16383
+// for any given string key.
+func Slot(key string) int {
+	if key == "" {
+		return RandomSlot()
+	}
+	key = Key(key)
+	return int(crc16sum(key)) % slotNumber
+}
+
+func crc16sum(key string) (crc uint16) {
+	for i := 0; i < len(key); i++ {
+		crc = (crc << 8) ^ crc16tab[(byte(crc>>8)^key[i])&0x00ff]
+	}
+	return
+}

vendor/github.com/redis/go-redis/v9/internal/hscan/hscan.go

@@ -0,0 +1,207 @@
+package hscan
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strconv"
+)
+
+// decoderFunc represents decoding functions for default built-in types.
+type decoderFunc func(reflect.Value, string) error
+
+// Scanner is the interface implemented by themselves,
+// which will override the decoding behavior of decoderFunc.
+type Scanner interface {
+	ScanRedis(s string) error
+}
+
+var (
+	// List of built-in decoders indexed by their numeric constant values (eg: reflect.Bool = 1).
+	decoders = []decoderFunc{
+		reflect.Bool:          decodeBool,
+		reflect.Int:           decodeInt,
+		reflect.Int8:          decodeInt8,
+		reflect.Int16:         decodeInt16,
+		reflect.Int32:         decodeInt32,
+		reflect.Int64:         decodeInt64,
+		reflect.Uint:          decodeUint,
+		reflect.Uint8:         decodeUint8,
+		reflect.Uint16:        decodeUint16,
+		reflect.Uint32:        decodeUint32,
+		reflect.Uint64:        decodeUint64,
+		reflect.Float32:       decodeFloat32,
+		reflect.Float64:       decodeFloat64,
+		reflect.Complex64:     decodeUnsupported,
+		reflect.Complex128:    decodeUnsupported,
+		reflect.Array:         decodeUnsupported,
+		reflect.Chan:          decodeUnsupported,
+		reflect.Func:          decodeUnsupported,
+		reflect.Interface:     decodeUnsupported,
+		reflect.Map:           decodeUnsupported,
+		reflect.Ptr:           decodeUnsupported,
+		reflect.Slice:         decodeSlice,
+		reflect.String:        decodeString,
+		reflect.Struct:        decodeUnsupported,
+		reflect.UnsafePointer: decodeUnsupported,
+	}
+
+	// Global map of struct field specs that is populated once for every new
+	// struct type that is scanned. This caches the field types and the corresponding
+	// decoder functions to avoid iterating through struct fields on subsequent scans.
+	globalStructMap = newStructMap()
+)
+
+func Struct(dst interface{}) (StructValue, error) {
+	v := reflect.ValueOf(dst)
+
+	// The destination to scan into should be a struct pointer.
+	if v.Kind() != reflect.Ptr || v.IsNil() {
+		return StructValue{}, fmt.Errorf("redis.Scan(non-pointer %T)", dst)
+	}
+
+	v = v.Elem()
+	if v.Kind() != reflect.Struct {
+		return StructValue{}, fmt.Errorf("redis.Scan(non-struct %T)", dst)
+	}
+
+	return StructValue{
+		spec:  globalStructMap.get(v.Type()),
+		value: v,
+	}, nil
+}
+
+// Scan scans the results from a key-value Redis map result set to a destination struct.
+// The Redis keys are matched to the struct's field with the `redis` tag.
+func Scan(dst interface{}, keys []interface{}, vals []interface{}) error {
+	if len(keys) != len(vals) {
+		return errors.New("args should have the same number of keys and vals")
+	}
+
+	strct, err := Struct(dst)
+	if err != nil {
+		return err
+	}
+
+	// Iterate through the (key, value) sequence.
+	for i := 0; i < len(vals); i++ {
+		key, ok := keys[i].(string)
+		if !ok {
+			continue
+		}
+
+		val, ok := vals[i].(string)
+		if !ok {
+			continue
+		}
+
+		if err := strct.Scan(key, val); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func decodeBool(f reflect.Value, s string) error {
+	b, err := strconv.ParseBool(s)
+	if err != nil {
+		return err
+	}
+	f.SetBool(b)
+	return nil
+}
+
+func decodeInt8(f reflect.Value, s string) error {
+	return decodeNumber(f, s, 8)
+}
+
+func decodeInt16(f reflect.Value, s string) error {
+	return decodeNumber(f, s, 16)
+}
+
+func decodeInt32(f reflect.Value, s string) error {
+	return decodeNumber(f, s, 32)
+}
+
+func decodeInt64(f reflect.Value, s string) error {
+	return decodeNumber(f, s, 64)
+}
+
+func decodeInt(f reflect.Value, s string) error {
+	return decodeNumber(f, s, 0)
+}
+
+func decodeNumber(f reflect.Value, s string, bitSize int) error {
+	v, err := strconv.ParseInt(s, 10, bitSize)
+	if err != nil {
+		return err
+	}
+	f.SetInt(v)
+	return nil
+}
+
+func decodeUint8(f reflect.Value, s string) error {
+	return decodeUnsignedNumber(f, s, 8)
+}
+
+func decodeUint16(f reflect.Value, s string) error {
+	return decodeUnsignedNumber(f, s, 16)
+}
+
+func decodeUint32(f reflect.Value, s string) error {
+	return decodeUnsignedNumber(f, s, 32)
+}
+
+func decodeUint64(f reflect.Value, s string) error {
+	return decodeUnsignedNumber(f, s, 64)
+}
+
+func decodeUint(f reflect.Value, s string) error {
+	return decodeUnsignedNumber(f, s, 0)
+}
+
+func decodeUnsignedNumber(f reflect.Value, s string, bitSize int) error {
+	v, err := strconv.ParseUint(s, 10, bitSize)
+	if err != nil {
+		return err
+	}
+	f.SetUint(v)
+	return nil
+}
+
+func decodeFloat32(f reflect.Value, s string) error {
+	v, err := strconv.ParseFloat(s, 32)
+	if err != nil {
+		return err
+	}
+	f.SetFloat(v)
+	return nil
+}
+
+// although the default is float64, but we better define it.
+func decodeFloat64(f reflect.Value, s string) error {
+	v, err := strconv.ParseFloat(s, 64)
+	if err != nil {
+		return err
+	}
+	f.SetFloat(v)
+	return nil
+}
+
+func decodeString(f reflect.Value, s string) error {
+	f.SetString(s)
+	return nil
+}
+
+func decodeSlice(f reflect.Value, s string) error {
+	// []byte slice ([]uint8).
+	if f.Type().Elem().Kind() == reflect.Uint8 {
+		f.SetBytes([]byte(s))
+	}
+	return nil
+}
+
+func decodeUnsupported(v reflect.Value, s string) error {
+	return fmt.Errorf("redis.Scan(unsupported %s)", v.Type())
+}

vendor/github.com/redis/go-redis/v9/internal/hscan/structmap.go

@@ -0,0 +1,121 @@
+package hscan
+
+import (
+	"encoding"
+	"fmt"
+	"reflect"
+	"strings"
+	"sync"
+
+	"github.com/redis/go-redis/v9/internal/util"
+)
+
+// structMap contains the map of struct fields for target structs
+// indexed by the struct type.
+type structMap struct {
+	m sync.Map
+}
+
+func newStructMap() *structMap {
+	return new(structMap)
+}
+
+func (s *structMap) get(t reflect.Type) *structSpec {
+	if v, ok := s.m.Load(t); ok {
+		return v.(*structSpec)
+	}
+
+	spec := newStructSpec(t, "redis")
+	s.m.Store(t, spec)
+	return spec
+}
+
+//------------------------------------------------------------------------------
+
+// structSpec contains the list of all fields in a target struct.
+type structSpec struct {
+	m map[string]*structField
+}
+
+func (s *structSpec) set(tag string, sf *structField) {
+	s.m[tag] = sf
+}
+
+func newStructSpec(t reflect.Type, fieldTag string) *structSpec {
+	numField := t.NumField()
+	out := &structSpec{
+		m: make(map[string]*structField, numField),
+	}
+
+	for i := 0; i < numField; i++ {
+		f := t.Field(i)
+
+		tag := f.Tag.Get(fieldTag)
+		if tag == "" || tag == "-" {
+			continue
+		}
+
+		tag = strings.Split(tag, ",")[0]
+		if tag == "" {
+			continue
+		}
+
+		// Use the built-in decoder.
+		out.set(tag, &structField{index: i, fn: decoders[f.Type.Kind()]})
+	}
+
+	return out
+}
+
+//------------------------------------------------------------------------------
+
+// structField represents a single field in a target struct.
+type structField struct {
+	index int
+	fn    decoderFunc
+}
+
+//------------------------------------------------------------------------------
+
+type StructValue struct {
+	spec  *structSpec
+	value reflect.Value
+}
+
+func (s StructValue) Scan(key string, value string) error {
+	field, ok := s.spec.m[key]
+	if !ok {
+		return nil
+	}
+
+	v := s.value.Field(field.index)
+	isPtr := v.Kind() == reflect.Ptr
+
+	if isPtr && v.IsNil() {
+		v.Set(reflect.New(v.Type().Elem()))
+	}
+	if !isPtr && v.Type().Name() != "" && v.CanAddr() {
+		v = v.Addr()
+		isPtr = true
+	}
+
+	if isPtr && v.Type().NumMethod() > 0 && v.CanInterface() {
+		switch scan := v.Interface().(type) {
+		case Scanner:
+			return scan.ScanRedis(value)
+		case encoding.TextUnmarshaler:
+			return scan.UnmarshalText(util.StringToBytes(value))
+		}
+	}
+
+	if isPtr {
+		v = v.Elem()
+	}
+
+	if err := field.fn(v, value); err != nil {
+		t := s.value.Type()
+		return fmt.Errorf("cannot scan redis.result %s into struct field %s.%s of type %s, error-%s",
+			value, t.Name(), t.Field(field.index).Name, t.Field(field.index).Type, err.Error())
+	}
+	return nil
+}

vendor/github.com/redis/go-redis/v9/internal/internal.go

@@ -0,0 +1,29 @@
+package internal
+
+import (
+	"time"
+
+	"github.com/redis/go-redis/v9/internal/rand"
+)
+
+func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration {
+	if retry < 0 {
+		panic("not reached")
+	}
+	if minBackoff == 0 {
+		return 0
+	}
+
+	d := minBackoff << uint(retry)
+	if d < minBackoff {
+		return maxBackoff
+	}
+
+	d = minBackoff + time.Duration(rand.Int63n(int64(d)))
+
+	if d > maxBackoff || d < minBackoff {
+		d = maxBackoff
+	}
+
+	return d
+}

vendor/github.com/redis/go-redis/v9/internal/log.go

@@ -0,0 +1,26 @@
+package internal
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+)
+
+type Logging interface {
+	Printf(ctx context.Context, format string, v ...interface{})
+}
+
+type logger struct {
+	log *log.Logger
+}
+
+func (l *logger) Printf(ctx context.Context, format string, v ...interface{}) {
+	_ = l.log.Output(2, fmt.Sprintf(format, v...))
+}
+
+// Logger calls Output to print to the stderr.
+// Arguments are handled in the manner of fmt.Print.
+var Logger Logging = &logger{
+	log: log.New(os.Stderr, "redis: ", log.LstdFlags|log.Lshortfile),
+}

vendor/github.com/redis/go-redis/v9/internal/once.go

@@ -0,0 +1,63 @@
+/*
+Copyright 2014 The Camlistore Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package internal
+
+import (
+	"sync"
+	"sync/atomic"
+)
+
+// A Once will perform a successful action exactly once.
+//
+// Unlike a sync.Once, this Once's func returns an error
+// and is re-armed on failure.
+type Once struct {
+	m    sync.Mutex
+	done uint32
+}
+
+// Do calls the function f if and only if Do has not been invoked
+// without error for this instance of Once.  In other words, given
+//
+//	var once Once
+//
+// if once.Do(f) is called multiple times, only the first call will
+// invoke f, even if f has a different value in each invocation unless
+// f returns an error.  A new instance of Once is required for each
+// function to execute.
+//
+// Do is intended for initialization that must be run exactly once.  Since f
+// is niladic, it may be necessary to use a function literal to capture the
+// arguments to a function to be invoked by Do:
+//
+//	err := config.once.Do(func() error { return config.init(filename) })
+func (o *Once) Do(f func() error) error {
+	if atomic.LoadUint32(&o.done) == 1 {
+		return nil
+	}
+	// Slow-path.
+	o.m.Lock()
+	defer o.m.Unlock()
+	var err error
+	if o.done == 0 {
+		err = f()
+		if err == nil {
+			atomic.StoreUint32(&o.done, 1)
+		}
+	}
+	return err
+}

vendor/github.com/redis/go-redis/v9/internal/pool/conn.go

@@ -0,0 +1,127 @@
+package pool
+
+import (
+	"bufio"
+	"context"
+	"net"
+	"sync/atomic"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal/proto"
+)
+
+var noDeadline = time.Time{}
+
+type Conn struct {
+	usedAt  int64 // atomic
+	netConn net.Conn
+
+	rd *proto.Reader
+	bw *bufio.Writer
+	wr *proto.Writer
+
+	Inited    bool
+	pooled    bool
+	createdAt time.Time
+}
+
+func NewConn(netConn net.Conn) *Conn {
+	cn := &Conn{
+		netConn:   netConn,
+		createdAt: time.Now(),
+	}
+	cn.rd = proto.NewReader(netConn)
+	cn.bw = bufio.NewWriter(netConn)
+	cn.wr = proto.NewWriter(cn.bw)
+	cn.SetUsedAt(time.Now())
+	return cn
+}
+
+func (cn *Conn) UsedAt() time.Time {
+	unix := atomic.LoadInt64(&cn.usedAt)
+	return time.Unix(unix, 0)
+}
+
+func (cn *Conn) SetUsedAt(tm time.Time) {
+	atomic.StoreInt64(&cn.usedAt, tm.Unix())
+}
+
+func (cn *Conn) SetNetConn(netConn net.Conn) {
+	cn.netConn = netConn
+	cn.rd.Reset(netConn)
+	cn.bw.Reset(netConn)
+}
+
+func (cn *Conn) Write(b []byte) (int, error) {
+	return cn.netConn.Write(b)
+}
+
+func (cn *Conn) RemoteAddr() net.Addr {
+	if cn.netConn != nil {
+		return cn.netConn.RemoteAddr()
+	}
+	return nil
+}
+
+func (cn *Conn) WithReader(
+	ctx context.Context, timeout time.Duration, fn func(rd *proto.Reader) error,
+) error {
+	if timeout >= 0 {
+		if err := cn.netConn.SetReadDeadline(cn.deadline(ctx, timeout)); err != nil {
+			return err
+		}
+	}
+	return fn(cn.rd)
+}
+
+func (cn *Conn) WithWriter(
+	ctx context.Context, timeout time.Duration, fn func(wr *proto.Writer) error,
+) error {
+	if timeout >= 0 {
+		if err := cn.netConn.SetWriteDeadline(cn.deadline(ctx, timeout)); err != nil {
+			return err
+		}
+	}
+
+	if cn.bw.Buffered() > 0 {
+		cn.bw.Reset(cn.netConn)
+	}
+
+	if err := fn(cn.wr); err != nil {
+		return err
+	}
+
+	return cn.bw.Flush()
+}
+
+func (cn *Conn) Close() error {
+	return cn.netConn.Close()
+}
+
+func (cn *Conn) deadline(ctx context.Context, timeout time.Duration) time.Time {
+	tm := time.Now()
+	cn.SetUsedAt(tm)
+
+	if timeout > 0 {
+		tm = tm.Add(timeout)
+	}
+
+	if ctx != nil {
+		deadline, ok := ctx.Deadline()
+		if ok {
+			if timeout == 0 {
+				return deadline
+			}
+			if deadline.Before(tm) {
+				return deadline
+			}
+			return tm
+		}
+	}
+
+	if timeout > 0 {
+		return tm
+	}
+
+	return noDeadline
+}

vendor/github.com/redis/go-redis/v9/internal/pool/conn_check.go

@@ -0,0 +1,50 @@
+//go:build linux || darwin || dragonfly || freebsd || netbsd || openbsd || solaris || illumos
+// +build linux darwin dragonfly freebsd netbsd openbsd solaris illumos
+
+package pool
+
+import (
+	"errors"
+	"io"
+	"net"
+	"syscall"
+	"time"
+)
+
+var errUnexpectedRead = errors.New("unexpected read from socket")
+
+func connCheck(conn net.Conn) error {
+	// Reset previous timeout.
+	_ = conn.SetDeadline(time.Time{})
+
+	sysConn, ok := conn.(syscall.Conn)
+	if !ok {
+		return nil
+	}
+	rawConn, err := sysConn.SyscallConn()
+	if err != nil {
+		return err
+	}
+
+	var sysErr error
+
+	if err := rawConn.Read(func(fd uintptr) bool {
+		var buf [1]byte
+		n, err := syscall.Read(int(fd), buf[:])
+		switch {
+		case n == 0 && err == nil:
+			sysErr = io.EOF
+		case n > 0:
+			sysErr = errUnexpectedRead
+		case err == syscall.EAGAIN || err == syscall.EWOULDBLOCK:
+			sysErr = nil
+		default:
+			sysErr = err
+		}
+		return true
+	}); err != nil {
+		return err
+	}
+
+	return sysErr
+}

vendor/github.com/redis/go-redis/v9/internal/pool/conn_check_dummy.go

@@ -0,0 +1,10 @@
+//go:build !linux && !darwin && !dragonfly && !freebsd && !netbsd && !openbsd && !solaris && !illumos
+// +build !linux,!darwin,!dragonfly,!freebsd,!netbsd,!openbsd,!solaris,!illumos
+
+package pool
+
+import "net"
+
+func connCheck(conn net.Conn) error {
+	return nil
+}

vendor/github.com/redis/go-redis/v9/internal/pool/pool.go

@@ -0,0 +1,502 @@
+package pool
+
+import (
+	"context"
+	"errors"
+	"net"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal"
+)
+
+var (
+	// ErrClosed performs any operation on the closed client will return this error.
+	ErrClosed = errors.New("redis: client is closed")
+
+	// ErrPoolTimeout timed out waiting to get a connection from the connection pool.
+	ErrPoolTimeout = errors.New("redis: connection pool timeout")
+)
+
+var timers = sync.Pool{
+	New: func() interface{} {
+		t := time.NewTimer(time.Hour)
+		t.Stop()
+		return t
+	},
+}
+
+// Stats contains pool state information and accumulated stats.
+type Stats struct {
+	Hits     uint32 // number of times free connection was found in the pool
+	Misses   uint32 // number of times free connection was NOT found in the pool
+	Timeouts uint32 // number of times a wait timeout occurred
+
+	TotalConns uint32 // number of total connections in the pool
+	IdleConns  uint32 // number of idle connections in the pool
+	StaleConns uint32 // number of stale connections removed from the pool
+}
+
+type Pooler interface {
+	NewConn(context.Context) (*Conn, error)
+	CloseConn(*Conn) error
+
+	Get(context.Context) (*Conn, error)
+	Put(context.Context, *Conn)
+	Remove(context.Context, *Conn, error)
+
+	Len() int
+	IdleLen() int
+	Stats() *Stats
+
+	Close() error
+}
+
+type Options struct {
+	Dialer func(context.Context) (net.Conn, error)
+
+	PoolFIFO        bool
+	PoolSize        int
+	PoolTimeout     time.Duration
+	MinIdleConns    int
+	MaxIdleConns    int
+	ConnMaxIdleTime time.Duration
+	ConnMaxLifetime time.Duration
+}
+
+type lastDialErrorWrap struct {
+	err error
+}
+
+type ConnPool struct {
+	cfg *Options
+
+	dialErrorsNum uint32 // atomic
+	lastDialError atomic.Value
+
+	queue chan struct{}
+
+	connsMu   sync.Mutex
+	conns     []*Conn
+	idleConns []*Conn
+
+	poolSize     int
+	idleConnsLen int
+
+	stats Stats
+
+	_closed uint32 // atomic
+}
+
+var _ Pooler = (*ConnPool)(nil)
+
+func NewConnPool(opt *Options) *ConnPool {
+	p := &ConnPool{
+		cfg: opt,
+
+		queue:     make(chan struct{}, opt.PoolSize),
+		conns:     make([]*Conn, 0, opt.PoolSize),
+		idleConns: make([]*Conn, 0, opt.PoolSize),
+	}
+
+	p.connsMu.Lock()
+	p.checkMinIdleConns()
+	p.connsMu.Unlock()
+
+	return p
+}
+
+func (p *ConnPool) checkMinIdleConns() {
+	if p.cfg.MinIdleConns == 0 {
+		return
+	}
+	for p.poolSize < p.cfg.PoolSize && p.idleConnsLen < p.cfg.MinIdleConns {
+		select {
+		case p.queue <- struct{}{}:
+			p.poolSize++
+			p.idleConnsLen++
+
+			go func() {
+				err := p.addIdleConn()
+				if err != nil && err != ErrClosed {
+					p.connsMu.Lock()
+					p.poolSize--
+					p.idleConnsLen--
+					p.connsMu.Unlock()
+				}
+
+				p.freeTurn()
+			}()
+		default:
+			return
+		}
+	}
+}
+
+func (p *ConnPool) addIdleConn() error {
+	cn, err := p.dialConn(context.TODO(), true)
+	if err != nil {
+		return err
+	}
+
+	p.connsMu.Lock()
+	defer p.connsMu.Unlock()
+
+	// It is not allowed to add new connections to the closed connection pool.
+	if p.closed() {
+		_ = cn.Close()
+		return ErrClosed
+	}
+
+	p.conns = append(p.conns, cn)
+	p.idleConns = append(p.idleConns, cn)
+	return nil
+}
+
+func (p *ConnPool) NewConn(ctx context.Context) (*Conn, error) {
+	return p.newConn(ctx, false)
+}
+
+func (p *ConnPool) newConn(ctx context.Context, pooled bool) (*Conn, error) {
+	cn, err := p.dialConn(ctx, pooled)
+	if err != nil {
+		return nil, err
+	}
+
+	p.connsMu.Lock()
+	defer p.connsMu.Unlock()
+
+	// It is not allowed to add new connections to the closed connection pool.
+	if p.closed() {
+		_ = cn.Close()
+		return nil, ErrClosed
+	}
+
+	p.conns = append(p.conns, cn)
+	if pooled {
+		// If pool is full remove the cn on next Put.
+		if p.poolSize >= p.cfg.PoolSize {
+			cn.pooled = false
+		} else {
+			p.poolSize++
+		}
+	}
+
+	return cn, nil
+}
+
+func (p *ConnPool) dialConn(ctx context.Context, pooled bool) (*Conn, error) {
+	if p.closed() {
+		return nil, ErrClosed
+	}
+
+	if atomic.LoadUint32(&p.dialErrorsNum) >= uint32(p.cfg.PoolSize) {
+		return nil, p.getLastDialError()
+	}
+
+	netConn, err := p.cfg.Dialer(ctx)
+	if err != nil {
+		p.setLastDialError(err)
+		if atomic.AddUint32(&p.dialErrorsNum, 1) == uint32(p.cfg.PoolSize) {
+			go p.tryDial()
+		}
+		return nil, err
+	}
+
+	cn := NewConn(netConn)
+	cn.pooled = pooled
+	return cn, nil
+}
+
+func (p *ConnPool) tryDial() {
+	for {
+		if p.closed() {
+			return
+		}
+
+		conn, err := p.cfg.Dialer(context.Background())
+		if err != nil {
+			p.setLastDialError(err)
+			time.Sleep(time.Second)
+			continue
+		}
+
+		atomic.StoreUint32(&p.dialErrorsNum, 0)
+		_ = conn.Close()
+		return
+	}
+}
+
+func (p *ConnPool) setLastDialError(err error) {
+	p.lastDialError.Store(&lastDialErrorWrap{err: err})
+}
+
+func (p *ConnPool) getLastDialError() error {
+	err, _ := p.lastDialError.Load().(*lastDialErrorWrap)
+	if err != nil {
+		return err.err
+	}
+	return nil
+}
+
+// Get returns existed connection from the pool or creates a new one.
+func (p *ConnPool) Get(ctx context.Context) (*Conn, error) {
+	if p.closed() {
+		return nil, ErrClosed
+	}
+
+	if err := p.waitTurn(ctx); err != nil {
+		return nil, err
+	}
+
+	for {
+		p.connsMu.Lock()
+		cn, err := p.popIdle()
+		p.connsMu.Unlock()
+
+		if err != nil {
+			return nil, err
+		}
+
+		if cn == nil {
+			break
+		}
+
+		if !p.isHealthyConn(cn) {
+			_ = p.CloseConn(cn)
+			continue
+		}
+
+		atomic.AddUint32(&p.stats.Hits, 1)
+		return cn, nil
+	}
+
+	atomic.AddUint32(&p.stats.Misses, 1)
+
+	newcn, err := p.newConn(ctx, true)
+	if err != nil {
+		p.freeTurn()
+		return nil, err
+	}
+
+	return newcn, nil
+}
+
+func (p *ConnPool) waitTurn(ctx context.Context) error {
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	default:
+	}
+
+	select {
+	case p.queue <- struct{}{}:
+		return nil
+	default:
+	}
+
+	timer := timers.Get().(*time.Timer)
+	timer.Reset(p.cfg.PoolTimeout)
+
+	select {
+	case <-ctx.Done():
+		if !timer.Stop() {
+			<-timer.C
+		}
+		timers.Put(timer)
+		return ctx.Err()
+	case p.queue <- struct{}{}:
+		if !timer.Stop() {
+			<-timer.C
+		}
+		timers.Put(timer)
+		return nil
+	case <-timer.C:
+		timers.Put(timer)
+		atomic.AddUint32(&p.stats.Timeouts, 1)
+		return ErrPoolTimeout
+	}
+}
+
+func (p *ConnPool) freeTurn() {
+	<-p.queue
+}
+
+func (p *ConnPool) popIdle() (*Conn, error) {
+	if p.closed() {
+		return nil, ErrClosed
+	}
+	n := len(p.idleConns)
+	if n == 0 {
+		return nil, nil
+	}
+
+	var cn *Conn
+	if p.cfg.PoolFIFO {
+		cn = p.idleConns[0]
+		copy(p.idleConns, p.idleConns[1:])
+		p.idleConns = p.idleConns[:n-1]
+	} else {
+		idx := n - 1
+		cn = p.idleConns[idx]
+		p.idleConns = p.idleConns[:idx]
+	}
+	p.idleConnsLen--
+	p.checkMinIdleConns()
+	return cn, nil
+}
+
+func (p *ConnPool) Put(ctx context.Context, cn *Conn) {
+	if cn.rd.Buffered() > 0 {
+		internal.Logger.Printf(ctx, "Conn has unread data")
+		p.Remove(ctx, cn, BadConnError{})
+		return
+	}
+
+	if !cn.pooled {
+		p.Remove(ctx, cn, nil)
+		return
+	}
+
+	var shouldCloseConn bool
+
+	p.connsMu.Lock()
+
+	if p.cfg.MaxIdleConns == 0 || p.idleConnsLen < p.cfg.MaxIdleConns {
+		p.idleConns = append(p.idleConns, cn)
+		p.idleConnsLen++
+	} else {
+		p.removeConn(cn)
+		shouldCloseConn = true
+	}
+
+	p.connsMu.Unlock()
+
+	p.freeTurn()
+
+	if shouldCloseConn {
+		_ = p.closeConn(cn)
+	}
+}
+
+func (p *ConnPool) Remove(_ context.Context, cn *Conn, reason error) {
+	p.removeConnWithLock(cn)
+	p.freeTurn()
+	_ = p.closeConn(cn)
+}
+
+func (p *ConnPool) CloseConn(cn *Conn) error {
+	p.removeConnWithLock(cn)
+	return p.closeConn(cn)
+}
+
+func (p *ConnPool) removeConnWithLock(cn *Conn) {
+	p.connsMu.Lock()
+	defer p.connsMu.Unlock()
+	p.removeConn(cn)
+}
+
+func (p *ConnPool) removeConn(cn *Conn) {
+	for i, c := range p.conns {
+		if c == cn {
+			p.conns = append(p.conns[:i], p.conns[i+1:]...)
+			if cn.pooled {
+				p.poolSize--
+				p.checkMinIdleConns()
+			}
+			break
+		}
+	}
+	atomic.AddUint32(&p.stats.StaleConns, 1)
+}
+
+func (p *ConnPool) closeConn(cn *Conn) error {
+	return cn.Close()
+}
+
+// Len returns total number of connections.
+func (p *ConnPool) Len() int {
+	p.connsMu.Lock()
+	n := len(p.conns)
+	p.connsMu.Unlock()
+	return n
+}
+
+// IdleLen returns number of idle connections.
+func (p *ConnPool) IdleLen() int {
+	p.connsMu.Lock()
+	n := p.idleConnsLen
+	p.connsMu.Unlock()
+	return n
+}
+
+func (p *ConnPool) Stats() *Stats {
+	return &Stats{
+		Hits:     atomic.LoadUint32(&p.stats.Hits),
+		Misses:   atomic.LoadUint32(&p.stats.Misses),
+		Timeouts: atomic.LoadUint32(&p.stats.Timeouts),
+
+		TotalConns: uint32(p.Len()),
+		IdleConns:  uint32(p.IdleLen()),
+		StaleConns: atomic.LoadUint32(&p.stats.StaleConns),
+	}
+}
+
+func (p *ConnPool) closed() bool {
+	return atomic.LoadUint32(&p._closed) == 1
+}
+
+func (p *ConnPool) Filter(fn func(*Conn) bool) error {
+	p.connsMu.Lock()
+	defer p.connsMu.Unlock()
+
+	var firstErr error
+	for _, cn := range p.conns {
+		if fn(cn) {
+			if err := p.closeConn(cn); err != nil && firstErr == nil {
+				firstErr = err
+			}
+		}
+	}
+	return firstErr
+}
+
+func (p *ConnPool) Close() error {
+	if !atomic.CompareAndSwapUint32(&p._closed, 0, 1) {
+		return ErrClosed
+	}
+
+	var firstErr error
+	p.connsMu.Lock()
+	for _, cn := range p.conns {
+		if err := p.closeConn(cn); err != nil && firstErr == nil {
+			firstErr = err
+		}
+	}
+	p.conns = nil
+	p.poolSize = 0
+	p.idleConns = nil
+	p.idleConnsLen = 0
+	p.connsMu.Unlock()
+
+	return firstErr
+}
+
+func (p *ConnPool) isHealthyConn(cn *Conn) bool {
+	now := time.Now()
+
+	if p.cfg.ConnMaxLifetime > 0 && now.Sub(cn.createdAt) >= p.cfg.ConnMaxLifetime {
+		return false
+	}
+	if p.cfg.ConnMaxIdleTime > 0 && now.Sub(cn.UsedAt()) >= p.cfg.ConnMaxIdleTime {
+		return false
+	}
+
+	if connCheck(cn.netConn) != nil {
+		return false
+	}
+
+	cn.SetUsedAt(now)
+	return true
+}

vendor/github.com/redis/go-redis/v9/internal/pool/pool_single.go

@@ -0,0 +1,58 @@
+package pool
+
+import "context"
+
+type SingleConnPool struct {
+	pool      Pooler
+	cn        *Conn
+	stickyErr error
+}
+
+var _ Pooler = (*SingleConnPool)(nil)
+
+func NewSingleConnPool(pool Pooler, cn *Conn) *SingleConnPool {
+	return &SingleConnPool{
+		pool: pool,
+		cn:   cn,
+	}
+}
+
+func (p *SingleConnPool) NewConn(ctx context.Context) (*Conn, error) {
+	return p.pool.NewConn(ctx)
+}
+
+func (p *SingleConnPool) CloseConn(cn *Conn) error {
+	return p.pool.CloseConn(cn)
+}
+
+func (p *SingleConnPool) Get(ctx context.Context) (*Conn, error) {
+	if p.stickyErr != nil {
+		return nil, p.stickyErr
+	}
+	return p.cn, nil
+}
+
+func (p *SingleConnPool) Put(ctx context.Context, cn *Conn) {}
+
+func (p *SingleConnPool) Remove(ctx context.Context, cn *Conn, reason error) {
+	p.cn = nil
+	p.stickyErr = reason
+}
+
+func (p *SingleConnPool) Close() error {
+	p.cn = nil
+	p.stickyErr = ErrClosed
+	return nil
+}
+
+func (p *SingleConnPool) Len() int {
+	return 0
+}
+
+func (p *SingleConnPool) IdleLen() int {
+	return 0
+}
+
+func (p *SingleConnPool) Stats() *Stats {
+	return &Stats{}
+}

vendor/github.com/redis/go-redis/v9/internal/pool/pool_sticky.go

@@ -0,0 +1,201 @@
+package pool
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"sync/atomic"
+)
+
+const (
+	stateDefault = 0
+	stateInited  = 1
+	stateClosed  = 2
+)
+
+type BadConnError struct {
+	wrapped error
+}
+
+var _ error = (*BadConnError)(nil)
+
+func (e BadConnError) Error() string {
+	s := "redis: Conn is in a bad state"
+	if e.wrapped != nil {
+		s += ": " + e.wrapped.Error()
+	}
+	return s
+}
+
+func (e BadConnError) Unwrap() error {
+	return e.wrapped
+}
+
+//------------------------------------------------------------------------------
+
+type StickyConnPool struct {
+	pool   Pooler
+	shared int32 // atomic
+
+	state uint32 // atomic
+	ch    chan *Conn
+
+	_badConnError atomic.Value
+}
+
+var _ Pooler = (*StickyConnPool)(nil)
+
+func NewStickyConnPool(pool Pooler) *StickyConnPool {
+	p, ok := pool.(*StickyConnPool)
+	if !ok {
+		p = &StickyConnPool{
+			pool: pool,
+			ch:   make(chan *Conn, 1),
+		}
+	}
+	atomic.AddInt32(&p.shared, 1)
+	return p
+}
+
+func (p *StickyConnPool) NewConn(ctx context.Context) (*Conn, error) {
+	return p.pool.NewConn(ctx)
+}
+
+func (p *StickyConnPool) CloseConn(cn *Conn) error {
+	return p.pool.CloseConn(cn)
+}
+
+func (p *StickyConnPool) Get(ctx context.Context) (*Conn, error) {
+	// In worst case this races with Close which is not a very common operation.
+	for i := 0; i < 1000; i++ {
+		switch atomic.LoadUint32(&p.state) {
+		case stateDefault:
+			cn, err := p.pool.Get(ctx)
+			if err != nil {
+				return nil, err
+			}
+			if atomic.CompareAndSwapUint32(&p.state, stateDefault, stateInited) {
+				return cn, nil
+			}
+			p.pool.Remove(ctx, cn, ErrClosed)
+		case stateInited:
+			if err := p.badConnError(); err != nil {
+				return nil, err
+			}
+			cn, ok := <-p.ch
+			if !ok {
+				return nil, ErrClosed
+			}
+			return cn, nil
+		case stateClosed:
+			return nil, ErrClosed
+		default:
+			panic("not reached")
+		}
+	}
+	return nil, fmt.Errorf("redis: StickyConnPool.Get: infinite loop")
+}
+
+func (p *StickyConnPool) Put(ctx context.Context, cn *Conn) {
+	defer func() {
+		if recover() != nil {
+			p.freeConn(ctx, cn)
+		}
+	}()
+	p.ch <- cn
+}
+
+func (p *StickyConnPool) freeConn(ctx context.Context, cn *Conn) {
+	if err := p.badConnError(); err != nil {
+		p.pool.Remove(ctx, cn, err)
+	} else {
+		p.pool.Put(ctx, cn)
+	}
+}
+
+func (p *StickyConnPool) Remove(ctx context.Context, cn *Conn, reason error) {
+	defer func() {
+		if recover() != nil {
+			p.pool.Remove(ctx, cn, ErrClosed)
+		}
+	}()
+	p._badConnError.Store(BadConnError{wrapped: reason})
+	p.ch <- cn
+}
+
+func (p *StickyConnPool) Close() error {
+	if shared := atomic.AddInt32(&p.shared, -1); shared > 0 {
+		return nil
+	}
+
+	for i := 0; i < 1000; i++ {
+		state := atomic.LoadUint32(&p.state)
+		if state == stateClosed {
+			return ErrClosed
+		}
+		if atomic.CompareAndSwapUint32(&p.state, state, stateClosed) {
+			close(p.ch)
+			cn, ok := <-p.ch
+			if ok {
+				p.freeConn(context.TODO(), cn)
+			}
+			return nil
+		}
+	}
+
+	return errors.New("redis: StickyConnPool.Close: infinite loop")
+}
+
+func (p *StickyConnPool) Reset(ctx context.Context) error {
+	if p.badConnError() == nil {
+		return nil
+	}
+
+	select {
+	case cn, ok := <-p.ch:
+		if !ok {
+			return ErrClosed
+		}
+		p.pool.Remove(ctx, cn, ErrClosed)
+		p._badConnError.Store(BadConnError{wrapped: nil})
+	default:
+		return errors.New("redis: StickyConnPool does not have a Conn")
+	}
+
+	if !atomic.CompareAndSwapUint32(&p.state, stateInited, stateDefault) {
+		state := atomic.LoadUint32(&p.state)
+		return fmt.Errorf("redis: invalid StickyConnPool state: %d", state)
+	}
+
+	return nil
+}
+
+func (p *StickyConnPool) badConnError() error {
+	if v := p._badConnError.Load(); v != nil {
+		if err := v.(BadConnError); err.wrapped != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (p *StickyConnPool) Len() int {
+	switch atomic.LoadUint32(&p.state) {
+	case stateDefault:
+		return 0
+	case stateInited:
+		return 1
+	case stateClosed:
+		return 0
+	default:
+		panic("not reached")
+	}
+}
+
+func (p *StickyConnPool) IdleLen() int {
+	return len(p.ch)
+}
+
+func (p *StickyConnPool) Stats() *Stats {
+	return &Stats{}
+}

vendor/github.com/redis/go-redis/v9/internal/proto/reader.go

@@ -0,0 +1,552 @@
+package proto
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"strconv"
+
+	"github.com/redis/go-redis/v9/internal/util"
+)
+
+// redis resp protocol data type.
+const (
+	RespStatus    = '+' // +<string>\r\n
+	RespError     = '-' // -<string>\r\n
+	RespString    = '$' // $<length>\r\n<bytes>\r\n
+	RespInt       = ':' // :<number>\r\n
+	RespNil       = '_' // _\r\n
+	RespFloat     = ',' // ,<floating-point-number>\r\n (golang float)
+	RespBool      = '#' // true: #t\r\n false: #f\r\n
+	RespBlobError = '!' // !<length>\r\n<bytes>\r\n
+	RespVerbatim  = '=' // =<length>\r\nFORMAT:<bytes>\r\n
+	RespBigInt    = '(' // (<big number>\r\n
+	RespArray     = '*' // *<len>\r\n... (same as resp2)
+	RespMap       = '%' // %<len>\r\n(key)\r\n(value)\r\n... (golang map)
+	RespSet       = '~' // ~<len>\r\n... (same as Array)
+	RespAttr      = '|' // |<len>\r\n(key)\r\n(value)\r\n... + command reply
+	RespPush      = '>' // ><len>\r\n... (same as Array)
+)
+
+// Not used temporarily.
+// Redis has not used these two data types for the time being, and will implement them later.
+// Streamed           = "EOF:"
+// StreamedAggregated = '?'
+
+//------------------------------------------------------------------------------
+
+const Nil = RedisError("redis: nil") // nolint:errname
+
+type RedisError string
+
+func (e RedisError) Error() string { return string(e) }
+
+func (RedisError) RedisError() {}
+
+func ParseErrorReply(line []byte) error {
+	return RedisError(line[1:])
+}
+
+//------------------------------------------------------------------------------
+
+type Reader struct {
+	rd *bufio.Reader
+}
+
+func NewReader(rd io.Reader) *Reader {
+	return &Reader{
+		rd: bufio.NewReader(rd),
+	}
+}
+
+func (r *Reader) Buffered() int {
+	return r.rd.Buffered()
+}
+
+func (r *Reader) Peek(n int) ([]byte, error) {
+	return r.rd.Peek(n)
+}
+
+func (r *Reader) Reset(rd io.Reader) {
+	r.rd.Reset(rd)
+}
+
+// PeekReplyType returns the data type of the next response without advancing the Reader,
+// and discard the attribute type.
+func (r *Reader) PeekReplyType() (byte, error) {
+	b, err := r.rd.Peek(1)
+	if err != nil {
+		return 0, err
+	}
+	if b[0] == RespAttr {
+		if err = r.DiscardNext(); err != nil {
+			return 0, err
+		}
+		return r.PeekReplyType()
+	}
+	return b[0], nil
+}
+
+// ReadLine Return a valid reply, it will check the protocol or redis error,
+// and discard the attribute type.
+func (r *Reader) ReadLine() ([]byte, error) {
+	line, err := r.readLine()
+	if err != nil {
+		return nil, err
+	}
+	switch line[0] {
+	case RespError:
+		return nil, ParseErrorReply(line)
+	case RespNil:
+		return nil, Nil
+	case RespBlobError:
+		var blobErr string
+		blobErr, err = r.readStringReply(line)
+		if err == nil {
+			err = RedisError(blobErr)
+		}
+		return nil, err
+	case RespAttr:
+		if err = r.Discard(line); err != nil {
+			return nil, err
+		}
+		return r.ReadLine()
+	}
+
+	// Compatible with RESP2
+	if IsNilReply(line) {
+		return nil, Nil
+	}
+
+	return line, nil
+}
+
+// readLine returns an error if:
+//   - there is a pending read error;
+//   - or line does not end with \r\n.
+func (r *Reader) readLine() ([]byte, error) {
+	b, err := r.rd.ReadSlice('\n')
+	if err != nil {
+		if err != bufio.ErrBufferFull {
+			return nil, err
+		}
+
+		full := make([]byte, len(b))
+		copy(full, b)
+
+		b, err = r.rd.ReadBytes('\n')
+		if err != nil {
+			return nil, err
+		}
+
+		full = append(full, b...) //nolint:makezero
+		b = full
+	}
+	if len(b) <= 2 || b[len(b)-1] != '\n' || b[len(b)-2] != '\r' {
+		return nil, fmt.Errorf("redis: invalid reply: %q", b)
+	}
+	return b[:len(b)-2], nil
+}
+
+func (r *Reader) ReadReply() (interface{}, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return nil, err
+	}
+
+	switch line[0] {
+	case RespStatus:
+		return string(line[1:]), nil
+	case RespInt:
+		return util.ParseInt(line[1:], 10, 64)
+	case RespFloat:
+		return r.readFloat(line)
+	case RespBool:
+		return r.readBool(line)
+	case RespBigInt:
+		return r.readBigInt(line)
+
+	case RespString:
+		return r.readStringReply(line)
+	case RespVerbatim:
+		return r.readVerb(line)
+
+	case RespArray, RespSet, RespPush:
+		return r.readSlice(line)
+	case RespMap:
+		return r.readMap(line)
+	}
+	return nil, fmt.Errorf("redis: can't parse %.100q", line)
+}
+
+func (r *Reader) readFloat(line []byte) (float64, error) {
+	v := string(line[1:])
+	switch string(line[1:]) {
+	case "inf":
+		return math.Inf(1), nil
+	case "-inf":
+		return math.Inf(-1), nil
+	case "nan", "-nan":
+		return math.NaN(), nil
+	}
+	return strconv.ParseFloat(v, 64)
+}
+
+func (r *Reader) readBool(line []byte) (bool, error) {
+	switch string(line[1:]) {
+	case "t":
+		return true, nil
+	case "f":
+		return false, nil
+	}
+	return false, fmt.Errorf("redis: can't parse bool reply: %q", line)
+}
+
+func (r *Reader) readBigInt(line []byte) (*big.Int, error) {
+	i := new(big.Int)
+	if i, ok := i.SetString(string(line[1:]), 10); ok {
+		return i, nil
+	}
+	return nil, fmt.Errorf("redis: can't parse bigInt reply: %q", line)
+}
+
+func (r *Reader) readStringReply(line []byte) (string, error) {
+	n, err := replyLen(line)
+	if err != nil {
+		return "", err
+	}
+
+	b := make([]byte, n+2)
+	_, err = io.ReadFull(r.rd, b)
+	if err != nil {
+		return "", err
+	}
+
+	return util.BytesToString(b[:n]), nil
+}
+
+func (r *Reader) readVerb(line []byte) (string, error) {
+	s, err := r.readStringReply(line)
+	if err != nil {
+		return "", err
+	}
+	if len(s) < 4 || s[3] != ':' {
+		return "", fmt.Errorf("redis: can't parse verbatim string reply: %q", line)
+	}
+	return s[4:], nil
+}
+
+func (r *Reader) readSlice(line []byte) ([]interface{}, error) {
+	n, err := replyLen(line)
+	if err != nil {
+		return nil, err
+	}
+
+	val := make([]interface{}, n)
+	for i := 0; i < len(val); i++ {
+		v, err := r.ReadReply()
+		if err != nil {
+			if err == Nil {
+				val[i] = nil
+				continue
+			}
+			if err, ok := err.(RedisError); ok {
+				val[i] = err
+				continue
+			}
+			return nil, err
+		}
+		val[i] = v
+	}
+	return val, nil
+}
+
+func (r *Reader) readMap(line []byte) (map[interface{}]interface{}, error) {
+	n, err := replyLen(line)
+	if err != nil {
+		return nil, err
+	}
+	m := make(map[interface{}]interface{}, n)
+	for i := 0; i < n; i++ {
+		k, err := r.ReadReply()
+		if err != nil {
+			return nil, err
+		}
+		v, err := r.ReadReply()
+		if err != nil {
+			if err == Nil {
+				m[k] = nil
+				continue
+			}
+			if err, ok := err.(RedisError); ok {
+				m[k] = err
+				continue
+			}
+			return nil, err
+		}
+		m[k] = v
+	}
+	return m, nil
+}
+
+// -------------------------------
+
+func (r *Reader) ReadInt() (int64, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return 0, err
+	}
+	switch line[0] {
+	case RespInt, RespStatus:
+		return util.ParseInt(line[1:], 10, 64)
+	case RespString:
+		s, err := r.readStringReply(line)
+		if err != nil {
+			return 0, err
+		}
+		return util.ParseInt([]byte(s), 10, 64)
+	case RespBigInt:
+		b, err := r.readBigInt(line)
+		if err != nil {
+			return 0, err
+		}
+		if !b.IsInt64() {
+			return 0, fmt.Errorf("bigInt(%s) value out of range", b.String())
+		}
+		return b.Int64(), nil
+	}
+	return 0, fmt.Errorf("redis: can't parse int reply: %.100q", line)
+}
+
+func (r *Reader) ReadUint() (uint64, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return 0, err
+	}
+	switch line[0] {
+	case RespInt, RespStatus:
+		return util.ParseUint(line[1:], 10, 64)
+	case RespString:
+		s, err := r.readStringReply(line)
+		if err != nil {
+			return 0, err
+		}
+		return util.ParseUint([]byte(s), 10, 64)
+	case RespBigInt:
+		b, err := r.readBigInt(line)
+		if err != nil {
+			return 0, err
+		}
+		if !b.IsUint64() {
+			return 0, fmt.Errorf("bigInt(%s) value out of range", b.String())
+		}
+		return b.Uint64(), nil
+	}
+	return 0, fmt.Errorf("redis: can't parse uint reply: %.100q", line)
+}
+
+func (r *Reader) ReadFloat() (float64, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return 0, err
+	}
+	switch line[0] {
+	case RespFloat:
+		return r.readFloat(line)
+	case RespStatus:
+		return strconv.ParseFloat(string(line[1:]), 64)
+	case RespString:
+		s, err := r.readStringReply(line)
+		if err != nil {
+			return 0, err
+		}
+		return strconv.ParseFloat(s, 64)
+	}
+	return 0, fmt.Errorf("redis: can't parse float reply: %.100q", line)
+}
+
+func (r *Reader) ReadString() (string, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return "", err
+	}
+
+	switch line[0] {
+	case RespStatus, RespInt, RespFloat:
+		return string(line[1:]), nil
+	case RespString:
+		return r.readStringReply(line)
+	case RespBool:
+		b, err := r.readBool(line)
+		return strconv.FormatBool(b), err
+	case RespVerbatim:
+		return r.readVerb(line)
+	case RespBigInt:
+		b, err := r.readBigInt(line)
+		if err != nil {
+			return "", err
+		}
+		return b.String(), nil
+	}
+	return "", fmt.Errorf("redis: can't parse reply=%.100q reading string", line)
+}
+
+func (r *Reader) ReadBool() (bool, error) {
+	s, err := r.ReadString()
+	if err != nil {
+		return false, err
+	}
+	return s == "OK" || s == "1" || s == "true", nil
+}
+
+func (r *Reader) ReadSlice() ([]interface{}, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return nil, err
+	}
+	return r.readSlice(line)
+}
+
+// ReadFixedArrayLen read fixed array length.
+func (r *Reader) ReadFixedArrayLen(fixedLen int) error {
+	n, err := r.ReadArrayLen()
+	if err != nil {
+		return err
+	}
+	if n != fixedLen {
+		return fmt.Errorf("redis: got %d elements in the array, wanted %d", n, fixedLen)
+	}
+	return nil
+}
+
+// ReadArrayLen Read and return the length of the array.
+func (r *Reader) ReadArrayLen() (int, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return 0, err
+	}
+	switch line[0] {
+	case RespArray, RespSet, RespPush:
+		return replyLen(line)
+	default:
+		return 0, fmt.Errorf("redis: can't parse array/set/push reply: %.100q", line)
+	}
+}
+
+// ReadFixedMapLen reads fixed map length.
+func (r *Reader) ReadFixedMapLen(fixedLen int) error {
+	n, err := r.ReadMapLen()
+	if err != nil {
+		return err
+	}
+	if n != fixedLen {
+		return fmt.Errorf("redis: got %d elements in the map, wanted %d", n, fixedLen)
+	}
+	return nil
+}
+
+// ReadMapLen reads the length of the map type.
+// If responding to the array type (RespArray/RespSet/RespPush),
+// it must be a multiple of 2 and return n/2.
+// Other types will return an error.
+func (r *Reader) ReadMapLen() (int, error) {
+	line, err := r.ReadLine()
+	if err != nil {
+		return 0, err
+	}
+	switch line[0] {
+	case RespMap:
+		return replyLen(line)
+	case RespArray, RespSet, RespPush:
+		// Some commands and RESP2 protocol may respond to array types.
+		n, err := replyLen(line)
+		if err != nil {
+			return 0, err
+		}
+		if n%2 != 0 {
+			return 0, fmt.Errorf("redis: the length of the array must be a multiple of 2, got: %d", n)
+		}
+		return n / 2, nil
+	default:
+		return 0, fmt.Errorf("redis: can't parse map reply: %.100q", line)
+	}
+}
+
+// DiscardNext read and discard the data represented by the next line.
+func (r *Reader) DiscardNext() error {
+	line, err := r.readLine()
+	if err != nil {
+		return err
+	}
+	return r.Discard(line)
+}
+
+// Discard the data represented by line.
+func (r *Reader) Discard(line []byte) (err error) {
+	if len(line) == 0 {
+		return errors.New("redis: invalid line")
+	}
+	switch line[0] {
+	case RespStatus, RespError, RespInt, RespNil, RespFloat, RespBool, RespBigInt:
+		return nil
+	}
+
+	n, err := replyLen(line)
+	if err != nil && err != Nil {
+		return err
+	}
+
+	switch line[0] {
+	case RespBlobError, RespString, RespVerbatim:
+		// +\r\n
+		_, err = r.rd.Discard(n + 2)
+		return err
+	case RespArray, RespSet, RespPush:
+		for i := 0; i < n; i++ {
+			if err = r.DiscardNext(); err != nil {
+				return err
+			}
+		}
+		return nil
+	case RespMap, RespAttr:
+		// Read key & value.
+		for i := 0; i < n*2; i++ {
+			if err = r.DiscardNext(); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+
+	return fmt.Errorf("redis: can't parse %.100q", line)
+}
+
+func replyLen(line []byte) (n int, err error) {
+	n, err = util.Atoi(line[1:])
+	if err != nil {
+		return 0, err
+	}
+
+	if n < -1 {
+		return 0, fmt.Errorf("redis: invalid reply: %q", line)
+	}
+
+	switch line[0] {
+	case RespString, RespVerbatim, RespBlobError,
+		RespArray, RespSet, RespPush, RespMap, RespAttr:
+		if n == -1 {
+			return 0, Nil
+		}
+	}
+	return n, nil
+}
+
+// IsNilReply detects redis.Nil of RESP2.
+func IsNilReply(line []byte) bool {
+	return len(line) == 3 &&
+		(line[0] == RespString || line[0] == RespArray) &&
+		line[1] == '-' && line[2] == '1'
+}

vendor/github.com/redis/go-redis/v9/internal/proto/scan.go

@@ -0,0 +1,185 @@
+package proto
+
+import (
+	"encoding"
+	"fmt"
+	"net"
+	"reflect"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal/util"
+)
+
+// Scan parses bytes `b` to `v` with appropriate type.
+//
+//nolint:gocyclo
+func Scan(b []byte, v interface{}) error {
+	switch v := v.(type) {
+	case nil:
+		return fmt.Errorf("redis: Scan(nil)")
+	case *string:
+		*v = util.BytesToString(b)
+		return nil
+	case *[]byte:
+		*v = b
+		return nil
+	case *int:
+		var err error
+		*v, err = util.Atoi(b)
+		return err
+	case *int8:
+		n, err := util.ParseInt(b, 10, 8)
+		if err != nil {
+			return err
+		}
+		*v = int8(n)
+		return nil
+	case *int16:
+		n, err := util.ParseInt(b, 10, 16)
+		if err != nil {
+			return err
+		}
+		*v = int16(n)
+		return nil
+	case *int32:
+		n, err := util.ParseInt(b, 10, 32)
+		if err != nil {
+			return err
+		}
+		*v = int32(n)
+		return nil
+	case *int64:
+		n, err := util.ParseInt(b, 10, 64)
+		if err != nil {
+			return err
+		}
+		*v = n
+		return nil
+	case *uint:
+		n, err := util.ParseUint(b, 10, 64)
+		if err != nil {
+			return err
+		}
+		*v = uint(n)
+		return nil
+	case *uint8:
+		n, err := util.ParseUint(b, 10, 8)
+		if err != nil {
+			return err
+		}
+		*v = uint8(n)
+		return nil
+	case *uint16:
+		n, err := util.ParseUint(b, 10, 16)
+		if err != nil {
+			return err
+		}
+		*v = uint16(n)
+		return nil
+	case *uint32:
+		n, err := util.ParseUint(b, 10, 32)
+		if err != nil {
+			return err
+		}
+		*v = uint32(n)
+		return nil
+	case *uint64:
+		n, err := util.ParseUint(b, 10, 64)
+		if err != nil {
+			return err
+		}
+		*v = n
+		return nil
+	case *float32:
+		n, err := util.ParseFloat(b, 32)
+		if err != nil {
+			return err
+		}
+		*v = float32(n)
+		return err
+	case *float64:
+		var err error
+		*v, err = util.ParseFloat(b, 64)
+		return err
+	case *bool:
+		*v = len(b) == 1 && b[0] == '1'
+		return nil
+	case *time.Time:
+		var err error
+		*v, err = time.Parse(time.RFC3339Nano, util.BytesToString(b))
+		return err
+	case *time.Duration:
+		n, err := util.ParseInt(b, 10, 64)
+		if err != nil {
+			return err
+		}
+		*v = time.Duration(n)
+		return nil
+	case encoding.BinaryUnmarshaler:
+		return v.UnmarshalBinary(b)
+	case *net.IP:
+		*v = b
+		return nil
+	default:
+		return fmt.Errorf(
+			"redis: can't unmarshal %T (consider implementing BinaryUnmarshaler)", v)
+	}
+}
+
+func ScanSlice(data []string, slice interface{}) error {
+	v := reflect.ValueOf(slice)
+	if !v.IsValid() {
+		return fmt.Errorf("redis: ScanSlice(nil)")
+	}
+	if v.Kind() != reflect.Ptr {
+		return fmt.Errorf("redis: ScanSlice(non-pointer %T)", slice)
+	}
+	v = v.Elem()
+	if v.Kind() != reflect.Slice {
+		return fmt.Errorf("redis: ScanSlice(non-slice %T)", slice)
+	}
+
+	next := makeSliceNextElemFunc(v)
+	for i, s := range data {
+		elem := next()
+		if err := Scan([]byte(s), elem.Addr().Interface()); err != nil {
+			err = fmt.Errorf("redis: ScanSlice index=%d value=%q failed: %w", i, s, err)
+			return err
+		}
+	}
+
+	return nil
+}
+
+func makeSliceNextElemFunc(v reflect.Value) func() reflect.Value {
+	elemType := v.Type().Elem()
+
+	if elemType.Kind() == reflect.Ptr {
+		elemType = elemType.Elem()
+		return func() reflect.Value {
+			if v.Len() < v.Cap() {
+				v.Set(v.Slice(0, v.Len()+1))
+				elem := v.Index(v.Len() - 1)
+				if elem.IsNil() {
+					elem.Set(reflect.New(elemType))
+				}
+				return elem.Elem()
+			}
+
+			elem := reflect.New(elemType)
+			v.Set(reflect.Append(v, elem))
+			return elem.Elem()
+		}
+	}
+
+	zero := reflect.Zero(elemType)
+	return func() reflect.Value {
+		if v.Len() < v.Cap() {
+			v.Set(v.Slice(0, v.Len()+1))
+			return v.Index(v.Len() - 1)
+		}
+
+		v.Set(reflect.Append(v, zero))
+		return v.Index(v.Len() - 1)
+	}
+}

vendor/github.com/redis/go-redis/v9/internal/proto/writer.go

@@ -0,0 +1,158 @@
+package proto
+
+import (
+	"encoding"
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal/util"
+)
+
+type writer interface {
+	io.Writer
+	io.ByteWriter
+	// WriteString implement io.StringWriter.
+	WriteString(s string) (n int, err error)
+}
+
+type Writer struct {
+	writer
+
+	lenBuf []byte
+	numBuf []byte
+}
+
+func NewWriter(wr writer) *Writer {
+	return &Writer{
+		writer: wr,
+
+		lenBuf: make([]byte, 64),
+		numBuf: make([]byte, 64),
+	}
+}
+
+func (w *Writer) WriteArgs(args []interface{}) error {
+	if err := w.WriteByte(RespArray); err != nil {
+		return err
+	}
+
+	if err := w.writeLen(len(args)); err != nil {
+		return err
+	}
+
+	for _, arg := range args {
+		if err := w.WriteArg(arg); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (w *Writer) writeLen(n int) error {
+	w.lenBuf = strconv.AppendUint(w.lenBuf[:0], uint64(n), 10)
+	w.lenBuf = append(w.lenBuf, '\r', '\n')
+	_, err := w.Write(w.lenBuf)
+	return err
+}
+
+func (w *Writer) WriteArg(v interface{}) error {
+	switch v := v.(type) {
+	case nil:
+		return w.string("")
+	case string:
+		return w.string(v)
+	case []byte:
+		return w.bytes(v)
+	case int:
+		return w.int(int64(v))
+	case int8:
+		return w.int(int64(v))
+	case int16:
+		return w.int(int64(v))
+	case int32:
+		return w.int(int64(v))
+	case int64:
+		return w.int(v)
+	case uint:
+		return w.uint(uint64(v))
+	case uint8:
+		return w.uint(uint64(v))
+	case uint16:
+		return w.uint(uint64(v))
+	case uint32:
+		return w.uint(uint64(v))
+	case uint64:
+		return w.uint(v)
+	case float32:
+		return w.float(float64(v))
+	case float64:
+		return w.float(v)
+	case bool:
+		if v {
+			return w.int(1)
+		}
+		return w.int(0)
+	case time.Time:
+		w.numBuf = v.AppendFormat(w.numBuf[:0], time.RFC3339Nano)
+		return w.bytes(w.numBuf)
+	case time.Duration:
+		return w.int(v.Nanoseconds())
+	case encoding.BinaryMarshaler:
+		b, err := v.MarshalBinary()
+		if err != nil {
+			return err
+		}
+		return w.bytes(b)
+	case net.IP:
+		return w.bytes(v)
+	default:
+		return fmt.Errorf(
+			"redis: can't marshal %T (implement encoding.BinaryMarshaler)", v)
+	}
+}
+
+func (w *Writer) bytes(b []byte) error {
+	if err := w.WriteByte(RespString); err != nil {
+		return err
+	}
+
+	if err := w.writeLen(len(b)); err != nil {
+		return err
+	}
+
+	if _, err := w.Write(b); err != nil {
+		return err
+	}
+
+	return w.crlf()
+}
+
+func (w *Writer) string(s string) error {
+	return w.bytes(util.StringToBytes(s))
+}
+
+func (w *Writer) uint(n uint64) error {
+	w.numBuf = strconv.AppendUint(w.numBuf[:0], n, 10)
+	return w.bytes(w.numBuf)
+}
+
+func (w *Writer) int(n int64) error {
+	w.numBuf = strconv.AppendInt(w.numBuf[:0], n, 10)
+	return w.bytes(w.numBuf)
+}
+
+func (w *Writer) float(f float64) error {
+	w.numBuf = strconv.AppendFloat(w.numBuf[:0], f, 'f', -1, 64)
+	return w.bytes(w.numBuf)
+}
+
+func (w *Writer) crlf() error {
+	if err := w.WriteByte('\r'); err != nil {
+		return err
+	}
+	return w.WriteByte('\n')
+}

vendor/github.com/redis/go-redis/v9/internal/rand/rand.go

@@ -0,0 +1,50 @@
+package rand
+
+import (
+	"math/rand"
+	"sync"
+)
+
+// Int returns a non-negative pseudo-random int.
+func Int() int { return pseudo.Int() }
+
+// Intn returns, as an int, a non-negative pseudo-random number in [0,n).
+// It panics if n <= 0.
+func Intn(n int) int { return pseudo.Intn(n) }
+
+// Int63n returns, as an int64, a non-negative pseudo-random number in [0,n).
+// It panics if n <= 0.
+func Int63n(n int64) int64 { return pseudo.Int63n(n) }
+
+// Perm returns, as a slice of n ints, a pseudo-random permutation of the integers [0,n).
+func Perm(n int) []int { return pseudo.Perm(n) }
+
+// Seed uses the provided seed value to initialize the default Source to a
+// deterministic state. If Seed is not called, the generator behaves as if
+// seeded by Seed(1).
+func Seed(n int64) { pseudo.Seed(n) }
+
+var pseudo = rand.New(&source{src: rand.NewSource(1)})
+
+type source struct {
+	src rand.Source
+	mu  sync.Mutex
+}
+
+func (s *source) Int63() int64 {
+	s.mu.Lock()
+	n := s.src.Int63()
+	s.mu.Unlock()
+	return n
+}
+
+func (s *source) Seed(seed int64) {
+	s.mu.Lock()
+	s.src.Seed(seed)
+	s.mu.Unlock()
+}
+
+// Shuffle pseudo-randomizes the order of elements.
+// n is the number of elements.
+// swap swaps the elements with indexes i and j.
+func Shuffle(n int, swap func(i, j int)) { pseudo.Shuffle(n, swap) }

vendor/github.com/redis/go-redis/v9/internal/util.go

@@ -0,0 +1,46 @@
+package internal
+
+import (
+	"context"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal/util"
+)
+
+func Sleep(ctx context.Context, dur time.Duration) error {
+	t := time.NewTimer(dur)
+	defer t.Stop()
+
+	select {
+	case <-t.C:
+		return nil
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+}
+
+func ToLower(s string) string {
+	if isLower(s) {
+		return s
+	}
+
+	b := make([]byte, len(s))
+	for i := range b {
+		c := s[i]
+		if c >= 'A' && c <= 'Z' {
+			c += 'a' - 'A'
+		}
+		b[i] = c
+	}
+	return util.BytesToString(b)
+}
+
+func isLower(s string) bool {
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		if c >= 'A' && c <= 'Z' {
+			return false
+		}
+	}
+	return true
+}

vendor/github.com/redis/go-redis/v9/internal/util/safe.go

@@ -0,0 +1,12 @@
+//go:build appengine
+// +build appengine
+
+package util
+
+func BytesToString(b []byte) string {
+	return string(b)
+}
+
+func StringToBytes(s string) []byte {
+	return []byte(s)
+}

vendor/github.com/redis/go-redis/v9/internal/util/strconv.go

@@ -0,0 +1,19 @@
+package util
+
+import "strconv"
+
+func Atoi(b []byte) (int, error) {
+	return strconv.Atoi(BytesToString(b))
+}
+
+func ParseInt(b []byte, base int, bitSize int) (int64, error) {
+	return strconv.ParseInt(BytesToString(b), base, bitSize)
+}
+
+func ParseUint(b []byte, base int, bitSize int) (uint64, error) {
+	return strconv.ParseUint(BytesToString(b), base, bitSize)
+}
+
+func ParseFloat(b []byte, bitSize int) (float64, error) {
+	return strconv.ParseFloat(BytesToString(b), bitSize)
+}

vendor/github.com/redis/go-redis/v9/internal/util/unsafe.go

@@ -0,0 +1,23 @@
+//go:build !appengine
+// +build !appengine
+
+package util
+
+import (
+	"unsafe"
+)
+
+// BytesToString converts byte slice to string.
+func BytesToString(b []byte) string {
+	return *(*string)(unsafe.Pointer(&b))
+}
+
+// StringToBytes converts string to byte slice.
+func StringToBytes(s string) []byte {
+	return *(*[]byte)(unsafe.Pointer(
+		&struct {
+			string
+			Cap int
+		}{s, len(s)},
+	))
+}

vendor/github.com/redis/go-redis/v9/iterator.go

@@ -0,0 +1,66 @@
+package redis
+
+import (
+	"context"
+)
+
+// ScanIterator is used to incrementally iterate over a collection of elements.
+type ScanIterator struct {
+	cmd *ScanCmd
+	pos int
+}
+
+// Err returns the last iterator error, if any.
+func (it *ScanIterator) Err() error {
+	return it.cmd.Err()
+}
+
+// Next advances the cursor and returns true if more values can be read.
+func (it *ScanIterator) Next(ctx context.Context) bool {
+	// Instantly return on errors.
+	if it.cmd.Err() != nil {
+		return false
+	}
+
+	// Advance cursor, check if we are still within range.
+	if it.pos < len(it.cmd.page) {
+		it.pos++
+		return true
+	}
+
+	for {
+		// Return if there is no more data to fetch.
+		if it.cmd.cursor == 0 {
+			return false
+		}
+
+		// Fetch next page.
+		switch it.cmd.args[0] {
+		case "scan", "qscan":
+			it.cmd.args[1] = it.cmd.cursor
+		default:
+			it.cmd.args[2] = it.cmd.cursor
+		}
+
+		err := it.cmd.process(ctx, it.cmd)
+		if err != nil {
+			return false
+		}
+
+		it.pos = 1
+
+		// Redis can occasionally return empty page.
+		if len(it.cmd.page) > 0 {
+			return true
+		}
+	}
+}
+
+// Val returns the key/field at the current cursor position.
+func (it *ScanIterator) Val() string {
+	var v string
+	if it.cmd.Err() == nil && it.pos > 0 && it.pos <= len(it.cmd.page) {
+		v = it.cmd.page[it.pos-1]
+	}
+	return v
+}

vendor/github.com/redis/go-redis/v9/options.go

@@ -0,0 +1,505 @@
+package redis
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"net/url"
+	"runtime"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal/pool"
+)
+
+// Limiter is the interface of a rate limiter or a circuit breaker.
+type Limiter interface {
+	// Allow returns nil if operation is allowed or an error otherwise.
+	// If operation is allowed client must ReportResult of the operation
+	// whether it is a success or a failure.
+	Allow() error
+	// ReportResult reports the result of the previously allowed operation.
+	// nil indicates a success, non-nil error usually indicates a failure.
+	ReportResult(result error)
+}
+
+// Options keeps the settings to set up redis connection.
+type Options struct {
+	// The network type, either tcp or unix.
+	// Default is tcp.
+	Network string
+	// host:port address.
+	Addr string
+
+	// ClientName will execute the `CLIENT SETNAME ClientName` command for each conn.
+	ClientName string
+
+	// Dialer creates new network connection and has priority over
+	// Network and Addr options.
+	Dialer func(ctx context.Context, network, addr string) (net.Conn, error)
+
+	// Hook that is called when new connection is established.
+	OnConnect func(ctx context.Context, cn *Conn) error
+
+	// Protocol 2 or 3. Use the version to negotiate RESP version with redis-server.
+	// Default is 3.
+	Protocol int
+	// Use the specified Username to authenticate the current connection
+	// with one of the connections defined in the ACL list when connecting
+	// to a Redis 6.0 instance, or greater, that is using the Redis ACL system.
+	Username string
+	// Optional password. Must match the password specified in the
+	// requirepass server configuration option (if connecting to a Redis 5.0 instance, or lower),
+	// or the User Password when connecting to a Redis 6.0 instance, or greater,
+	// that is using the Redis ACL system.
+	Password string
+	// CredentialsProvider allows the username and password to be updated
+	// before reconnecting. It should return the current username and password.
+	CredentialsProvider func() (username string, password string)
+
+	// Database to be selected after connecting to the server.
+	DB int
+
+	// Maximum number of retries before giving up.
+	// Default is 3 retries; -1 (not 0) disables retries.
+	MaxRetries int
+	// Minimum backoff between each retry.
+	// Default is 8 milliseconds; -1 disables backoff.
+	MinRetryBackoff time.Duration
+	// Maximum backoff between each retry.
+	// Default is 512 milliseconds; -1 disables backoff.
+	MaxRetryBackoff time.Duration
+
+	// Dial timeout for establishing new connections.
+	// Default is 5 seconds.
+	DialTimeout time.Duration
+	// Timeout for socket reads. If reached, commands will fail
+	// with a timeout instead of blocking. Supported values:
+	//   - `0` - default timeout (3 seconds).
+	//   - `-1` - no timeout (block indefinitely).
+	//   - `-2` - disables SetReadDeadline calls completely.
+	ReadTimeout time.Duration
+	// Timeout for socket writes. If reached, commands will fail
+	// with a timeout instead of blocking.  Supported values:
+	//   - `0` - default timeout (3 seconds).
+	//   - `-1` - no timeout (block indefinitely).
+	//   - `-2` - disables SetWriteDeadline calls completely.
+	WriteTimeout time.Duration
+	// ContextTimeoutEnabled controls whether the client respects context timeouts and deadlines.
+	// See https://redis.uptrace.dev/guide/go-redis-debugging.html#timeouts
+	ContextTimeoutEnabled bool
+
+	// Type of connection pool.
+	// true for FIFO pool, false for LIFO pool.
+	// Note that FIFO has slightly higher overhead compared to LIFO,
+	// but it helps closing idle connections faster reducing the pool size.
+	PoolFIFO bool
+	// Maximum number of socket connections.
+	// Default is 10 connections per every available CPU as reported by runtime.GOMAXPROCS.
+	PoolSize int
+	// Amount of time client waits for connection if all connections
+	// are busy before returning an error.
+	// Default is ReadTimeout + 1 second.
+	PoolTimeout time.Duration
+	// Minimum number of idle connections which is useful when establishing
+	// new connection is slow.
+	// Default is 0. the idle connections are not closed by default.
+	MinIdleConns int
+	// Maximum number of idle connections.
+	// Default is 0. the idle connections are not closed by default.
+	MaxIdleConns int
+	// ConnMaxIdleTime is the maximum amount of time a connection may be idle.
+	// Should be less than server's timeout.
+	//
+	// Expired connections may be closed lazily before reuse.
+	// If d <= 0, connections are not closed due to a connection's idle time.
+	//
+	// Default is 30 minutes. -1 disables idle timeout check.
+	ConnMaxIdleTime time.Duration
+	// ConnMaxLifetime is the maximum amount of time a connection may be reused.
+	//
+	// Expired connections may be closed lazily before reuse.
+	// If <= 0, connections are not closed due to a connection's age.
+	//
+	// Default is to not close idle connections.
+	ConnMaxLifetime time.Duration
+
+	// TLS Config to use. When set, TLS will be negotiated.
+	TLSConfig *tls.Config
+
+	// Limiter interface used to implement circuit breaker or rate limiter.
+	Limiter Limiter
+
+	// Enables read only queries on slave/follower nodes.
+	readOnly bool
+}
+
+func (opt *Options) init() {
+	if opt.Addr == "" {
+		opt.Addr = "localhost:6379"
+	}
+	if opt.Network == "" {
+		if strings.HasPrefix(opt.Addr, "/") {
+			opt.Network = "unix"
+		} else {
+			opt.Network = "tcp"
+		}
+	}
+	if opt.DialTimeout == 0 {
+		opt.DialTimeout = 5 * time.Second
+	}
+	if opt.Dialer == nil {
+		opt.Dialer = NewDialer(opt)
+	}
+	if opt.PoolSize == 0 {
+		opt.PoolSize = 10 * runtime.GOMAXPROCS(0)
+	}
+	switch opt.ReadTimeout {
+	case -2:
+		opt.ReadTimeout = -1
+	case -1:
+		opt.ReadTimeout = 0
+	case 0:
+		opt.ReadTimeout = 3 * time.Second
+	}
+	switch opt.WriteTimeout {
+	case -2:
+		opt.WriteTimeout = -1
+	case -1:
+		opt.WriteTimeout = 0
+	case 0:
+		opt.WriteTimeout = opt.ReadTimeout
+	}
+	if opt.PoolTimeout == 0 {
+		if opt.ReadTimeout > 0 {
+			opt.PoolTimeout = opt.ReadTimeout + time.Second
+		} else {
+			opt.PoolTimeout = 30 * time.Second
+		}
+	}
+	if opt.ConnMaxIdleTime == 0 {
+		opt.ConnMaxIdleTime = 30 * time.Minute
+	}
+
+	if opt.MaxRetries == -1 {
+		opt.MaxRetries = 0
+	} else if opt.MaxRetries == 0 {
+		opt.MaxRetries = 3
+	}
+	switch opt.MinRetryBackoff {
+	case -1:
+		opt.MinRetryBackoff = 0
+	case 0:
+		opt.MinRetryBackoff = 8 * time.Millisecond
+	}
+	switch opt.MaxRetryBackoff {
+	case -1:
+		opt.MaxRetryBackoff = 0
+	case 0:
+		opt.MaxRetryBackoff = 512 * time.Millisecond
+	}
+}
+
+func (opt *Options) clone() *Options {
+	clone := *opt
+	return &clone
+}
+
+// NewDialer returns a function that will be used as the default dialer
+// when none is specified in Options.Dialer.
+func NewDialer(opt *Options) func(context.Context, string, string) (net.Conn, error) {
+	return func(ctx context.Context, network, addr string) (net.Conn, error) {
+		netDialer := &net.Dialer{
+			Timeout:   opt.DialTimeout,
+			KeepAlive: 5 * time.Minute,
+		}
+		if opt.TLSConfig == nil {
+			return netDialer.DialContext(ctx, network, addr)
+		}
+		return tls.DialWithDialer(netDialer, network, addr, opt.TLSConfig)
+	}
+}
+
+// ParseURL parses an URL into Options that can be used to connect to Redis.
+// Scheme is required.
+// There are two connection types: by tcp socket and by unix socket.
+// Tcp connection:
+//
+//	redis://<user>:<password>@<host>:<port>/<db_number>
+//
+// Unix connection:
+//
+//	unix://<user>:<password>@</path/to/redis.sock>?db=<db_number>
+//
+// Most Option fields can be set using query parameters, with the following restrictions:
+//   - field names are mapped using snake-case conversion: to set MaxRetries, use max_retries
+//   - only scalar type fields are supported (bool, int, time.Duration)
+//   - for time.Duration fields, values must be a valid input for time.ParseDuration();
+//     additionally a plain integer as value (i.e. without unit) is intepreted as seconds
+//   - to disable a duration field, use value less than or equal to 0; to use the default
+//     value, leave the value blank or remove the parameter
+//   - only the last value is interpreted if a parameter is given multiple times
+//   - fields "network", "addr", "username" and "password" can only be set using other
+//     URL attributes (scheme, host, userinfo, resp.), query paremeters using these
+//     names will be treated as unknown parameters
+//   - unknown parameter names will result in an error
+//
+// Examples:
+//
+//	redis://user:password@localhost:6789/3?dial_timeout=3&db=1&read_timeout=6s&max_retries=2
+//	is equivalent to:
+//	&Options{
+//		Network:     "tcp",
+//		Addr:        "localhost:6789",
+//		DB:          1,               // path "/3" was overridden by "&db=1"
+//		DialTimeout: 3 * time.Second, // no time unit = seconds
+//		ReadTimeout: 6 * time.Second,
+//		MaxRetries:  2,
+//	}
+func ParseURL(redisURL string) (*Options, error) {
+	u, err := url.Parse(redisURL)
+	if err != nil {
+		return nil, err
+	}
+
+	switch u.Scheme {
+	case "redis", "rediss":
+		return setupTCPConn(u)
+	case "unix":
+		return setupUnixConn(u)
+	default:
+		return nil, fmt.Errorf("redis: invalid URL scheme: %s", u.Scheme)
+	}
+}
+
+func setupTCPConn(u *url.URL) (*Options, error) {
+	o := &Options{Network: "tcp"}
+
+	o.Username, o.Password = getUserPassword(u)
+
+	h, p := getHostPortWithDefaults(u)
+	o.Addr = net.JoinHostPort(h, p)
+
+	f := strings.FieldsFunc(u.Path, func(r rune) bool {
+		return r == '/'
+	})
+	switch len(f) {
+	case 0:
+		o.DB = 0
+	case 1:
+		var err error
+		if o.DB, err = strconv.Atoi(f[0]); err != nil {
+			return nil, fmt.Errorf("redis: invalid database number: %q", f[0])
+		}
+	default:
+		return nil, fmt.Errorf("redis: invalid URL path: %s", u.Path)
+	}
+
+	if u.Scheme == "rediss" {
+		o.TLSConfig = &tls.Config{
+			ServerName: h,
+			MinVersion: tls.VersionTLS12,
+		}
+	}
+
+	return setupConnParams(u, o)
+}
+
+// getHostPortWithDefaults is a helper function that splits the url into
+// a host and a port. If the host is missing, it defaults to localhost
+// and if the port is missing, it defaults to 6379.
+func getHostPortWithDefaults(u *url.URL) (string, string) {
+	host, port, err := net.SplitHostPort(u.Host)
+	if err != nil {
+		host = u.Host
+	}
+	if host == "" {
+		host = "localhost"
+	}
+	if port == "" {
+		port = "6379"
+	}
+	return host, port
+}
+
+func setupUnixConn(u *url.URL) (*Options, error) {
+	o := &Options{
+		Network: "unix",
+	}
+
+	if strings.TrimSpace(u.Path) == "" { // path is required with unix connection
+		return nil, errors.New("redis: empty unix socket path")
+	}
+	o.Addr = u.Path
+	o.Username, o.Password = getUserPassword(u)
+	return setupConnParams(u, o)
+}
+
+type queryOptions struct {
+	q   url.Values
+	err error
+}
+
+func (o *queryOptions) has(name string) bool {
+	return len(o.q[name]) > 0
+}
+
+func (o *queryOptions) string(name string) string {
+	vs := o.q[name]
+	if len(vs) == 0 {
+		return ""
+	}
+	delete(o.q, name) // enable detection of unknown parameters
+	return vs[len(vs)-1]
+}
+
+func (o *queryOptions) strings(name string) []string {
+	vs := o.q[name]
+	delete(o.q, name)
+	return vs
+}
+
+func (o *queryOptions) int(name string) int {
+	s := o.string(name)
+	if s == "" {
+		return 0
+	}
+	i, err := strconv.Atoi(s)
+	if err == nil {
+		return i
+	}
+	if o.err == nil {
+		o.err = fmt.Errorf("redis: invalid %s number: %s", name, err)
+	}
+	return 0
+}
+
+func (o *queryOptions) duration(name string) time.Duration {
+	s := o.string(name)
+	if s == "" {
+		return 0
+	}
+	// try plain number first
+	if i, err := strconv.Atoi(s); err == nil {
+		if i <= 0 {
+			// disable timeouts
+			return -1
+		}
+		return time.Duration(i) * time.Second
+	}
+	dur, err := time.ParseDuration(s)
+	if err == nil {
+		return dur
+	}
+	if o.err == nil {
+		o.err = fmt.Errorf("redis: invalid %s duration: %w", name, err)
+	}
+	return 0
+}
+
+func (o *queryOptions) bool(name string) bool {
+	switch s := o.string(name); s {
+	case "true", "1":
+		return true
+	case "false", "0", "":
+		return false
+	default:
+		if o.err == nil {
+			o.err = fmt.Errorf("redis: invalid %s boolean: expected true/false/1/0 or an empty string, got %q", name, s)
+		}
+		return false
+	}
+}
+
+func (o *queryOptions) remaining() []string {
+	if len(o.q) == 0 {
+		return nil
+	}
+	keys := make([]string, 0, len(o.q))
+	for k := range o.q {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	return keys
+}
+
+// setupConnParams converts query parameters in u to option value in o.
+func setupConnParams(u *url.URL, o *Options) (*Options, error) {
+	q := queryOptions{q: u.Query()}
+
+	// compat: a future major release may use q.int("db")
+	if tmp := q.string("db"); tmp != "" {
+		db, err := strconv.Atoi(tmp)
+		if err != nil {
+			return nil, fmt.Errorf("redis: invalid database number: %w", err)
+		}
+		o.DB = db
+	}
+
+	o.Protocol = q.int("protocol")
+	o.ClientName = q.string("client_name")
+	o.MaxRetries = q.int("max_retries")
+	o.MinRetryBackoff = q.duration("min_retry_backoff")
+	o.MaxRetryBackoff = q.duration("max_retry_backoff")
+	o.DialTimeout = q.duration("dial_timeout")
+	o.ReadTimeout = q.duration("read_timeout")
+	o.WriteTimeout = q.duration("write_timeout")
+	o.PoolFIFO = q.bool("pool_fifo")
+	o.PoolSize = q.int("pool_size")
+	o.PoolTimeout = q.duration("pool_timeout")
+	o.MinIdleConns = q.int("min_idle_conns")
+	o.MaxIdleConns = q.int("max_idle_conns")
+	if q.has("conn_max_idle_time") {
+		o.ConnMaxIdleTime = q.duration("conn_max_idle_time")
+	} else {
+		o.ConnMaxIdleTime = q.duration("idle_timeout")
+	}
+	if q.has("conn_max_lifetime") {
+		o.ConnMaxLifetime = q.duration("conn_max_lifetime")
+	} else {
+		o.ConnMaxLifetime = q.duration("max_conn_age")
+	}
+	if q.err != nil {
+		return nil, q.err
+	}
+
+	// any parameters left?
+	if r := q.remaining(); len(r) > 0 {
+		return nil, fmt.Errorf("redis: unexpected option: %s", strings.Join(r, ", "))
+	}
+
+	return o, nil
+}
+
+func getUserPassword(u *url.URL) (string, string) {
+	var user, password string
+	if u.User != nil {
+		user = u.User.Username()
+		if p, ok := u.User.Password(); ok {
+			password = p
+		}
+	}
+	return user, password
+}
+
+func newConnPool(
+	opt *Options,
+	dialer func(ctx context.Context, network, addr string) (net.Conn, error),
+) *pool.ConnPool {
+	return pool.NewConnPool(&pool.Options{
+		Dialer: func(ctx context.Context) (net.Conn, error) {
+			return dialer(ctx, opt.Network, opt.Addr)
+		},
+		PoolFIFO:        opt.PoolFIFO,
+		PoolSize:        opt.PoolSize,
+		PoolTimeout:     opt.PoolTimeout,
+		MinIdleConns:    opt.MinIdleConns,
+		MaxIdleConns:    opt.MaxIdleConns,
+		ConnMaxIdleTime: opt.ConnMaxIdleTime,
+		ConnMaxLifetime: opt.ConnMaxLifetime,
+	})
+}

vendor/github.com/redis/go-redis/v9/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "redis",
+  "version": "9.1.0",
+  "main": "index.js",
+  "repository": "git@github.com:redis/go-redis.git",
+  "author": "Vladimir Mihailenco <vladimir.webdev@gmail.com>",
+  "license": "BSD-2-clause"
+}

vendor/github.com/redis/go-redis/v9/pipeline.go

@@ -0,0 +1,121 @@
+package redis
+
+import (
+	"context"
+	"errors"
+)
+
+type pipelineExecer func(context.Context, []Cmder) error
+
+// Pipeliner is an mechanism to realise Redis Pipeline technique.
+//
+// Pipelining is a technique to extremely speed up processing by packing
+// operations to batches, send them at once to Redis and read a replies in a
+// single step.
+// See https://redis.io/topics/pipelining
+//
+// Pay attention, that Pipeline is not a transaction, so you can get unexpected
+// results in case of big pipelines and small read/write timeouts.
+// Redis client has retransmission logic in case of timeouts, pipeline
+// can be retransmitted and commands can be executed more then once.
+// To avoid this: it is good idea to use reasonable bigger read/write timeouts
+// depends of your batch size and/or use TxPipeline.
+type Pipeliner interface {
+	StatefulCmdable
+
+	// Len is to obtain the number of commands in the pipeline that have not yet been executed.
+	Len() int
+
+	// Do is an API for executing any command.
+	// If a certain Redis command is not yet supported, you can use Do to execute it.
+	Do(ctx context.Context, args ...interface{}) *Cmd
+
+	// Process is to put the commands to be executed into the pipeline buffer.
+	Process(ctx context.Context, cmd Cmder) error
+
+	// Discard is to discard all commands in the cache that have not yet been executed.
+	Discard()
+
+	// Exec is to send all the commands buffered in the pipeline to the redis-server.
+	Exec(ctx context.Context) ([]Cmder, error)
+}
+
+var _ Pipeliner = (*Pipeline)(nil)
+
+// Pipeline implements pipelining as described in
+// http://redis.io/topics/pipelining.
+// Please note: it is not safe for concurrent use by multiple goroutines.
+type Pipeline struct {
+	cmdable
+	statefulCmdable
+
+	exec pipelineExecer
+	cmds []Cmder
+}
+
+func (c *Pipeline) init() {
+	c.cmdable = c.Process
+	c.statefulCmdable = c.Process
+}
+
+// Len returns the number of queued commands.
+func (c *Pipeline) Len() int {
+	return len(c.cmds)
+}
+
+// Do queues the custom command for later execution.
+func (c *Pipeline) Do(ctx context.Context, args ...interface{}) *Cmd {
+	cmd := NewCmd(ctx, args...)
+	if len(args) == 0 {
+		cmd.SetErr(errors.New("redis: please enter the command to be executed"))
+		return cmd
+	}
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Process queues the cmd for later execution.
+func (c *Pipeline) Process(ctx context.Context, cmd Cmder) error {
+	c.cmds = append(c.cmds, cmd)
+	return nil
+}
+
+// Discard resets the pipeline and discards queued commands.
+func (c *Pipeline) Discard() {
+	c.cmds = c.cmds[:0]
+}
+
+// Exec executes all previously queued commands using one
+// client-server roundtrip.
+//
+// Exec always returns list of commands and error of the first failed
+// command if any.
+func (c *Pipeline) Exec(ctx context.Context) ([]Cmder, error) {
+	if len(c.cmds) == 0 {
+		return nil, nil
+	}
+
+	cmds := c.cmds
+	c.cmds = nil
+
+	return cmds, c.exec(ctx, cmds)
+}
+
+func (c *Pipeline) Pipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	if err := fn(c); err != nil {
+		return nil, err
+	}
+	return c.Exec(ctx)
+}
+
+func (c *Pipeline) Pipeline() Pipeliner {
+	return c
+}
+
+func (c *Pipeline) TxPipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipelined(ctx, fn)
+}
+
+func (c *Pipeline) TxPipeline() Pipeliner {
+	return c
+}

vendor/github.com/redis/go-redis/v9/pubsub.go

@@ -0,0 +1,729 @@
+package redis
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal"
+	"github.com/redis/go-redis/v9/internal/pool"
+	"github.com/redis/go-redis/v9/internal/proto"
+)
+
+// PubSub implements Pub/Sub commands as described in
+// http://redis.io/topics/pubsub. Message receiving is NOT safe
+// for concurrent use by multiple goroutines.
+//
+// PubSub automatically reconnects to Redis Server and resubscribes
+// to the channels in case of network errors.
+type PubSub struct {
+	opt *Options
+
+	newConn   func(ctx context.Context, channels []string) (*pool.Conn, error)
+	closeConn func(*pool.Conn) error
+
+	mu        sync.Mutex
+	cn        *pool.Conn
+	channels  map[string]struct{}
+	patterns  map[string]struct{}
+	schannels map[string]struct{}
+
+	closed bool
+	exit   chan struct{}
+
+	cmd *Cmd
+
+	chOnce sync.Once
+	msgCh  *channel
+	allCh  *channel
+}
+
+func (c *PubSub) init() {
+	c.exit = make(chan struct{})
+}
+
+func (c *PubSub) String() string {
+	channels := mapKeys(c.channels)
+	channels = append(channels, mapKeys(c.patterns)...)
+	channels = append(channels, mapKeys(c.schannels)...)
+	return fmt.Sprintf("PubSub(%s)", strings.Join(channels, ", "))
+}
+
+func (c *PubSub) connWithLock(ctx context.Context) (*pool.Conn, error) {
+	c.mu.Lock()
+	cn, err := c.conn(ctx, nil)
+	c.mu.Unlock()
+	return cn, err
+}
+
+func (c *PubSub) conn(ctx context.Context, newChannels []string) (*pool.Conn, error) {
+	if c.closed {
+		return nil, pool.ErrClosed
+	}
+	if c.cn != nil {
+		return c.cn, nil
+	}
+
+	channels := mapKeys(c.channels)
+	channels = append(channels, newChannels...)
+
+	cn, err := c.newConn(ctx, channels)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := c.resubscribe(ctx, cn); err != nil {
+		_ = c.closeConn(cn)
+		return nil, err
+	}
+
+	c.cn = cn
+	return cn, nil
+}
+
+func (c *PubSub) writeCmd(ctx context.Context, cn *pool.Conn, cmd Cmder) error {
+	return cn.WithWriter(context.Background(), c.opt.WriteTimeout, func(wr *proto.Writer) error {
+		return writeCmd(wr, cmd)
+	})
+}
+
+func (c *PubSub) resubscribe(ctx context.Context, cn *pool.Conn) error {
+	var firstErr error
+
+	if len(c.channels) > 0 {
+		firstErr = c._subscribe(ctx, cn, "subscribe", mapKeys(c.channels))
+	}
+
+	if len(c.patterns) > 0 {
+		err := c._subscribe(ctx, cn, "psubscribe", mapKeys(c.patterns))
+		if err != nil && firstErr == nil {
+			firstErr = err
+		}
+	}
+
+	if len(c.schannels) > 0 {
+		err := c._subscribe(ctx, cn, "ssubscribe", mapKeys(c.schannels))
+		if err != nil && firstErr == nil {
+			firstErr = err
+		}
+	}
+
+	return firstErr
+}
+
+func mapKeys(m map[string]struct{}) []string {
+	s := make([]string, len(m))
+	i := 0
+	for k := range m {
+		s[i] = k
+		i++
+	}
+	return s
+}
+
+func (c *PubSub) _subscribe(
+	ctx context.Context, cn *pool.Conn, redisCmd string, channels []string,
+) error {
+	args := make([]interface{}, 0, 1+len(channels))
+	args = append(args, redisCmd)
+	for _, channel := range channels {
+		args = append(args, channel)
+	}
+	cmd := NewSliceCmd(ctx, args...)
+	return c.writeCmd(ctx, cn, cmd)
+}
+
+func (c *PubSub) releaseConnWithLock(
+	ctx context.Context,
+	cn *pool.Conn,
+	err error,
+	allowTimeout bool,
+) {
+	c.mu.Lock()
+	c.releaseConn(ctx, cn, err, allowTimeout)
+	c.mu.Unlock()
+}
+
+func (c *PubSub) releaseConn(ctx context.Context, cn *pool.Conn, err error, allowTimeout bool) {
+	if c.cn != cn {
+		return
+	}
+	if isBadConn(err, allowTimeout, c.opt.Addr) {
+		c.reconnect(ctx, err)
+	}
+}
+
+func (c *PubSub) reconnect(ctx context.Context, reason error) {
+	_ = c.closeTheCn(reason)
+	_, _ = c.conn(ctx, nil)
+}
+
+func (c *PubSub) closeTheCn(reason error) error {
+	if c.cn == nil {
+		return nil
+	}
+	if !c.closed {
+		internal.Logger.Printf(c.getContext(), "redis: discarding bad PubSub connection: %s", reason)
+	}
+	err := c.closeConn(c.cn)
+	c.cn = nil
+	return err
+}
+
+func (c *PubSub) Close() error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if c.closed {
+		return pool.ErrClosed
+	}
+	c.closed = true
+	close(c.exit)
+
+	return c.closeTheCn(pool.ErrClosed)
+}
+
+// Subscribe the client to the specified channels. It returns
+// empty subscription if there are no channels.
+func (c *PubSub) Subscribe(ctx context.Context, channels ...string) error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	err := c.subscribe(ctx, "subscribe", channels...)
+	if c.channels == nil {
+		c.channels = make(map[string]struct{})
+	}
+	for _, s := range channels {
+		c.channels[s] = struct{}{}
+	}
+	return err
+}
+
+// PSubscribe the client to the given patterns. It returns
+// empty subscription if there are no patterns.
+func (c *PubSub) PSubscribe(ctx context.Context, patterns ...string) error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	err := c.subscribe(ctx, "psubscribe", patterns...)
+	if c.patterns == nil {
+		c.patterns = make(map[string]struct{})
+	}
+	for _, s := range patterns {
+		c.patterns[s] = struct{}{}
+	}
+	return err
+}
+
+// SSubscribe Subscribes the client to the specified shard channels.
+func (c *PubSub) SSubscribe(ctx context.Context, channels ...string) error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	err := c.subscribe(ctx, "ssubscribe", channels...)
+	if c.schannels == nil {
+		c.schannels = make(map[string]struct{})
+	}
+	for _, s := range channels {
+		c.schannels[s] = struct{}{}
+	}
+	return err
+}
+
+// Unsubscribe the client from the given channels, or from all of
+// them if none is given.
+func (c *PubSub) Unsubscribe(ctx context.Context, channels ...string) error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if len(channels) > 0 {
+		for _, channel := range channels {
+			delete(c.channels, channel)
+		}
+	} else {
+		// Unsubscribe from all channels.
+		for channel := range c.channels {
+			delete(c.channels, channel)
+		}
+	}
+
+	err := c.subscribe(ctx, "unsubscribe", channels...)
+	return err
+}
+
+// PUnsubscribe the client from the given patterns, or from all of
+// them if none is given.
+func (c *PubSub) PUnsubscribe(ctx context.Context, patterns ...string) error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if len(patterns) > 0 {
+		for _, pattern := range patterns {
+			delete(c.patterns, pattern)
+		}
+	} else {
+		// Unsubscribe from all patterns.
+		for pattern := range c.patterns {
+			delete(c.patterns, pattern)
+		}
+	}
+
+	err := c.subscribe(ctx, "punsubscribe", patterns...)
+	return err
+}
+
+// SUnsubscribe unsubscribes the client from the given shard channels,
+// or from all of them if none is given.
+func (c *PubSub) SUnsubscribe(ctx context.Context, channels ...string) error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if len(channels) > 0 {
+		for _, channel := range channels {
+			delete(c.schannels, channel)
+		}
+	} else {
+		// Unsubscribe from all channels.
+		for channel := range c.schannels {
+			delete(c.schannels, channel)
+		}
+	}
+
+	err := c.subscribe(ctx, "sunsubscribe", channels...)
+	return err
+}
+
+func (c *PubSub) subscribe(ctx context.Context, redisCmd string, channels ...string) error {
+	cn, err := c.conn(ctx, channels)
+	if err != nil {
+		return err
+	}
+
+	err = c._subscribe(ctx, cn, redisCmd, channels)
+	c.releaseConn(ctx, cn, err, false)
+	return err
+}
+
+func (c *PubSub) Ping(ctx context.Context, payload ...string) error {
+	args := []interface{}{"ping"}
+	if len(payload) == 1 {
+		args = append(args, payload[0])
+	}
+	cmd := NewCmd(ctx, args...)
+
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	cn, err := c.conn(ctx, nil)
+	if err != nil {
+		return err
+	}
+
+	err = c.writeCmd(ctx, cn, cmd)
+	c.releaseConn(ctx, cn, err, false)
+	return err
+}
+
+// Subscription received after a successful subscription to channel.
+type Subscription struct {
+	// Can be "subscribe", "unsubscribe", "psubscribe" or "punsubscribe".
+	Kind string
+	// Channel name we have subscribed to.
+	Channel string
+	// Number of channels we are currently subscribed to.
+	Count int
+}
+
+func (m *Subscription) String() string {
+	return fmt.Sprintf("%s: %s", m.Kind, m.Channel)
+}
+
+// Message received as result of a PUBLISH command issued by another client.
+type Message struct {
+	Channel      string
+	Pattern      string
+	Payload      string
+	PayloadSlice []string
+}
+
+func (m *Message) String() string {
+	return fmt.Sprintf("Message<%s: %s>", m.Channel, m.Payload)
+}
+
+// Pong received as result of a PING command issued by another client.
+type Pong struct {
+	Payload string
+}
+
+func (p *Pong) String() string {
+	if p.Payload != "" {
+		return fmt.Sprintf("Pong<%s>", p.Payload)
+	}
+	return "Pong"
+}
+
+func (c *PubSub) newMessage(reply interface{}) (interface{}, error) {
+	switch reply := reply.(type) {
+	case string:
+		return &Pong{
+			Payload: reply,
+		}, nil
+	case []interface{}:
+		switch kind := reply[0].(string); kind {
+		case "subscribe", "unsubscribe", "psubscribe", "punsubscribe", "ssubscribe", "sunsubscribe":
+			// Can be nil in case of "unsubscribe".
+			channel, _ := reply[1].(string)
+			return &Subscription{
+				Kind:    kind,
+				Channel: channel,
+				Count:   int(reply[2].(int64)),
+			}, nil
+		case "message", "smessage":
+			switch payload := reply[2].(type) {
+			case string:
+				return &Message{
+					Channel: reply[1].(string),
+					Payload: payload,
+				}, nil
+			case []interface{}:
+				ss := make([]string, len(payload))
+				for i, s := range payload {
+					ss[i] = s.(string)
+				}
+				return &Message{
+					Channel:      reply[1].(string),
+					PayloadSlice: ss,
+				}, nil
+			default:
+				return nil, fmt.Errorf("redis: unsupported pubsub message payload: %T", payload)
+			}
+		case "pmessage":
+			return &Message{
+				Pattern: reply[1].(string),
+				Channel: reply[2].(string),
+				Payload: reply[3].(string),
+			}, nil
+		case "pong":
+			return &Pong{
+				Payload: reply[1].(string),
+			}, nil
+		default:
+			return nil, fmt.Errorf("redis: unsupported pubsub message: %q", kind)
+		}
+	default:
+		return nil, fmt.Errorf("redis: unsupported pubsub message: %#v", reply)
+	}
+}
+
+// ReceiveTimeout acts like Receive but returns an error if message
+// is not received in time. This is low-level API and in most cases
+// Channel should be used instead.
+func (c *PubSub) ReceiveTimeout(ctx context.Context, timeout time.Duration) (interface{}, error) {
+	if c.cmd == nil {
+		c.cmd = NewCmd(ctx)
+	}
+
+	// Don't hold the lock to allow subscriptions and pings.
+
+	cn, err := c.connWithLock(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	err = cn.WithReader(context.Background(), timeout, func(rd *proto.Reader) error {
+		return c.cmd.readReply(rd)
+	})
+
+	c.releaseConnWithLock(ctx, cn, err, timeout > 0)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return c.newMessage(c.cmd.Val())
+}
+
+// Receive returns a message as a Subscription, Message, Pong or error.
+// See PubSub example for details. This is low-level API and in most cases
+// Channel should be used instead.
+func (c *PubSub) Receive(ctx context.Context) (interface{}, error) {
+	return c.ReceiveTimeout(ctx, 0)
+}
+
+// ReceiveMessage returns a Message or error ignoring Subscription and Pong
+// messages. This is low-level API and in most cases Channel should be used
+// instead.
+func (c *PubSub) ReceiveMessage(ctx context.Context) (*Message, error) {
+	for {
+		msg, err := c.Receive(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		switch msg := msg.(type) {
+		case *Subscription:
+			// Ignore.
+		case *Pong:
+			// Ignore.
+		case *Message:
+			return msg, nil
+		default:
+			err := fmt.Errorf("redis: unknown message: %T", msg)
+			return nil, err
+		}
+	}
+}
+
+func (c *PubSub) getContext() context.Context {
+	if c.cmd != nil {
+		return c.cmd.ctx
+	}
+	return context.Background()
+}
+
+//------------------------------------------------------------------------------
+
+// Channel returns a Go channel for concurrently receiving messages.
+// The channel is closed together with the PubSub. If the Go channel
+// is blocked full for 30 seconds the message is dropped.
+// Receive* APIs can not be used after channel is created.
+//
+// go-redis periodically sends ping messages to test connection health
+// and re-subscribes if ping can not not received for 30 seconds.
+func (c *PubSub) Channel(opts ...ChannelOption) <-chan *Message {
+	c.chOnce.Do(func() {
+		c.msgCh = newChannel(c, opts...)
+		c.msgCh.initMsgChan()
+	})
+	if c.msgCh == nil {
+		err := fmt.Errorf("redis: Channel can't be called after ChannelWithSubscriptions")
+		panic(err)
+	}
+	return c.msgCh.msgCh
+}
+
+// ChannelSize is like Channel, but creates a Go channel
+// with specified buffer size.
+//
+// Deprecated: use Channel(WithChannelSize(size)), remove in v9.
+func (c *PubSub) ChannelSize(size int) <-chan *Message {
+	return c.Channel(WithChannelSize(size))
+}
+
+// ChannelWithSubscriptions is like Channel, but message type can be either
+// *Subscription or *Message. Subscription messages can be used to detect
+// reconnections.
+//
+// ChannelWithSubscriptions can not be used together with Channel or ChannelSize.
+func (c *PubSub) ChannelWithSubscriptions(opts ...ChannelOption) <-chan interface{} {
+	c.chOnce.Do(func() {
+		c.allCh = newChannel(c, opts...)
+		c.allCh.initAllChan()
+	})
+	if c.allCh == nil {
+		err := fmt.Errorf("redis: ChannelWithSubscriptions can't be called after Channel")
+		panic(err)
+	}
+	return c.allCh.allCh
+}
+
+type ChannelOption func(c *channel)
+
+// WithChannelSize specifies the Go chan size that is used to buffer incoming messages.
+//
+// The default is 100 messages.
+func WithChannelSize(size int) ChannelOption {
+	return func(c *channel) {
+		c.chanSize = size
+	}
+}
+
+// WithChannelHealthCheckInterval specifies the health check interval.
+// PubSub will ping Redis Server if it does not receive any messages within the interval.
+// To disable health check, use zero interval.
+//
+// The default is 3 seconds.
+func WithChannelHealthCheckInterval(d time.Duration) ChannelOption {
+	return func(c *channel) {
+		c.checkInterval = d
+	}
+}
+
+// WithChannelSendTimeout specifies the channel send timeout after which
+// the message is dropped.
+//
+// The default is 60 seconds.
+func WithChannelSendTimeout(d time.Duration) ChannelOption {
+	return func(c *channel) {
+		c.chanSendTimeout = d
+	}
+}
+
+type channel struct {
+	pubSub *PubSub
+
+	msgCh chan *Message
+	allCh chan interface{}
+	ping  chan struct{}
+
+	chanSize        int
+	chanSendTimeout time.Duration
+	checkInterval   time.Duration
+}
+
+func newChannel(pubSub *PubSub, opts ...ChannelOption) *channel {
+	c := &channel{
+		pubSub: pubSub,
+
+		chanSize:        100,
+		chanSendTimeout: time.Minute,
+		checkInterval:   3 * time.Second,
+	}
+	for _, opt := range opts {
+		opt(c)
+	}
+	if c.checkInterval > 0 {
+		c.initHealthCheck()
+	}
+	return c
+}
+
+func (c *channel) initHealthCheck() {
+	ctx := context.TODO()
+	c.ping = make(chan struct{}, 1)
+
+	go func() {
+		timer := time.NewTimer(time.Minute)
+		timer.Stop()
+
+		for {
+			timer.Reset(c.checkInterval)
+			select {
+			case <-c.ping:
+				if !timer.Stop() {
+					<-timer.C
+				}
+			case <-timer.C:
+				if pingErr := c.pubSub.Ping(ctx); pingErr != nil {
+					c.pubSub.mu.Lock()
+					c.pubSub.reconnect(ctx, pingErr)
+					c.pubSub.mu.Unlock()
+				}
+			case <-c.pubSub.exit:
+				return
+			}
+		}
+	}()
+}
+
+// initMsgChan must be in sync with initAllChan.
+func (c *channel) initMsgChan() {
+	ctx := context.TODO()
+	c.msgCh = make(chan *Message, c.chanSize)
+
+	go func() {
+		timer := time.NewTimer(time.Minute)
+		timer.Stop()
+
+		var errCount int
+		for {
+			msg, err := c.pubSub.Receive(ctx)
+			if err != nil {
+				if err == pool.ErrClosed {
+					close(c.msgCh)
+					return
+				}
+				if errCount > 0 {
+					time.Sleep(100 * time.Millisecond)
+				}
+				errCount++
+				continue
+			}
+
+			errCount = 0
+
+			// Any message is as good as a ping.
+			select {
+			case c.ping <- struct{}{}:
+			default:
+			}
+
+			switch msg := msg.(type) {
+			case *Subscription:
+				// Ignore.
+			case *Pong:
+				// Ignore.
+			case *Message:
+				timer.Reset(c.chanSendTimeout)
+				select {
+				case c.msgCh <- msg:
+					if !timer.Stop() {
+						<-timer.C
+					}
+				case <-timer.C:
+					internal.Logger.Printf(
+						ctx, "redis: %s channel is full for %s (message is dropped)",
+						c, c.chanSendTimeout)
+				}
+			default:
+				internal.Logger.Printf(ctx, "redis: unknown message type: %T", msg)
+			}
+		}
+	}()
+}
+
+// initAllChan must be in sync with initMsgChan.
+func (c *channel) initAllChan() {
+	ctx := context.TODO()
+	c.allCh = make(chan interface{}, c.chanSize)
+
+	go func() {
+		timer := time.NewTimer(time.Minute)
+		timer.Stop()
+
+		var errCount int
+		for {
+			msg, err := c.pubSub.Receive(ctx)
+			if err != nil {
+				if err == pool.ErrClosed {
+					close(c.allCh)
+					return
+				}
+				if errCount > 0 {
+					time.Sleep(100 * time.Millisecond)
+				}
+				errCount++
+				continue
+			}
+
+			errCount = 0
+
+			// Any message is as good as a ping.
+			select {
+			case c.ping <- struct{}{}:
+			default:
+			}
+
+			switch msg := msg.(type) {
+			case *Pong:
+				// Ignore.
+			case *Subscription, *Message:
+				timer.Reset(c.chanSendTimeout)
+				select {
+				case c.allCh <- msg:
+					if !timer.Stop() {
+						<-timer.C
+					}
+				case <-timer.C:
+					internal.Logger.Printf(
+						ctx, "redis: %s channel is full for %s (message is dropped)",
+						c, c.chanSendTimeout)
+				}
+			default:
+				internal.Logger.Printf(ctx, "redis: unknown message type: %T", msg)
+			}
+		}
+	}()
+}

vendor/github.com/redis/go-redis/v9/redis.go

@@ -0,0 +1,827 @@
+package redis
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"sync/atomic"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal"
+	"github.com/redis/go-redis/v9/internal/hscan"
+	"github.com/redis/go-redis/v9/internal/pool"
+	"github.com/redis/go-redis/v9/internal/proto"
+)
+
+// Scanner internal/hscan.Scanner exposed interface.
+type Scanner = hscan.Scanner
+
+// Nil reply returned by Redis when key does not exist.
+const Nil = proto.Nil
+
+// SetLogger set custom log
+func SetLogger(logger internal.Logging) {
+	internal.Logger = logger
+}
+
+//------------------------------------------------------------------------------
+
+type Hook interface {
+	DialHook(next DialHook) DialHook
+	ProcessHook(next ProcessHook) ProcessHook
+	ProcessPipelineHook(next ProcessPipelineHook) ProcessPipelineHook
+}
+
+type (
+	DialHook            func(ctx context.Context, network, addr string) (net.Conn, error)
+	ProcessHook         func(ctx context.Context, cmd Cmder) error
+	ProcessPipelineHook func(ctx context.Context, cmds []Cmder) error
+)
+
+type hooksMixin struct {
+	slice   []Hook
+	initial hooks
+	current hooks
+}
+
+func (hs *hooksMixin) initHooks(hooks hooks) {
+	hs.initial = hooks
+	hs.chain()
+}
+
+type hooks struct {
+	dial       DialHook
+	process    ProcessHook
+	pipeline   ProcessPipelineHook
+	txPipeline ProcessPipelineHook
+}
+
+func (h *hooks) setDefaults() {
+	if h.dial == nil {
+		h.dial = func(ctx context.Context, network, addr string) (net.Conn, error) { return nil, nil }
+	}
+	if h.process == nil {
+		h.process = func(ctx context.Context, cmd Cmder) error { return nil }
+	}
+	if h.pipeline == nil {
+		h.pipeline = func(ctx context.Context, cmds []Cmder) error { return nil }
+	}
+	if h.txPipeline == nil {
+		h.txPipeline = func(ctx context.Context, cmds []Cmder) error { return nil }
+	}
+}
+
+// AddHook is to add a hook to the queue.
+// Hook is a function executed during network connection, command execution, and pipeline,
+// it is a first-in-first-out stack queue (FIFO).
+// You need to execute the next hook in each hook, unless you want to terminate the execution of the command.
+// For example, you added hook-1, hook-2:
+//
+//	client.AddHook(hook-1, hook-2)
+//
+// hook-1:
+//
+//	func (Hook1) ProcessHook(next redis.ProcessHook) redis.ProcessHook {
+//	 	return func(ctx context.Context, cmd Cmder) error {
+//		 	print("hook-1 start")
+//		 	next(ctx, cmd)
+//		 	print("hook-1 end")
+//		 	return nil
+//	 	}
+//	}
+//
+// hook-2:
+//
+//	func (Hook2) ProcessHook(next redis.ProcessHook) redis.ProcessHook {
+//		return func(ctx context.Context, cmd redis.Cmder) error {
+//			print("hook-2 start")
+//			next(ctx, cmd)
+//			print("hook-2 end")
+//			return nil
+//		}
+//	}
+//
+// The execution sequence is:
+//
+//	hook-1 start -> hook-2 start -> exec redis cmd -> hook-2 end -> hook-1 end
+//
+// Please note: "next(ctx, cmd)" is very important, it will call the next hook,
+// if "next(ctx, cmd)" is not executed, the redis command will not be executed.
+func (hs *hooksMixin) AddHook(hook Hook) {
+	hs.slice = append(hs.slice, hook)
+	hs.chain()
+}
+
+func (hs *hooksMixin) chain() {
+	hs.initial.setDefaults()
+
+	hs.current.dial = hs.initial.dial
+	hs.current.process = hs.initial.process
+	hs.current.pipeline = hs.initial.pipeline
+	hs.current.txPipeline = hs.initial.txPipeline
+
+	for i := len(hs.slice) - 1; i >= 0; i-- {
+		if wrapped := hs.slice[i].DialHook(hs.current.dial); wrapped != nil {
+			hs.current.dial = wrapped
+		}
+		if wrapped := hs.slice[i].ProcessHook(hs.current.process); wrapped != nil {
+			hs.current.process = wrapped
+		}
+		if wrapped := hs.slice[i].ProcessPipelineHook(hs.current.pipeline); wrapped != nil {
+			hs.current.pipeline = wrapped
+		}
+		if wrapped := hs.slice[i].ProcessPipelineHook(hs.current.txPipeline); wrapped != nil {
+			hs.current.txPipeline = wrapped
+		}
+	}
+}
+
+func (hs *hooksMixin) clone() hooksMixin {
+	clone := *hs
+	l := len(clone.slice)
+	clone.slice = clone.slice[:l:l]
+	return clone
+}
+
+func (hs *hooksMixin) withProcessHook(ctx context.Context, cmd Cmder, hook ProcessHook) error {
+	for i := len(hs.slice) - 1; i >= 0; i-- {
+		if wrapped := hs.slice[i].ProcessHook(hook); wrapped != nil {
+			hook = wrapped
+		}
+	}
+	return hook(ctx, cmd)
+}
+
+func (hs *hooksMixin) withProcessPipelineHook(
+	ctx context.Context, cmds []Cmder, hook ProcessPipelineHook,
+) error {
+	for i := len(hs.slice) - 1; i >= 0; i-- {
+		if wrapped := hs.slice[i].ProcessPipelineHook(hook); wrapped != nil {
+			hook = wrapped
+		}
+	}
+	return hook(ctx, cmds)
+}
+
+func (hs *hooksMixin) dialHook(ctx context.Context, network, addr string) (net.Conn, error) {
+	return hs.current.dial(ctx, network, addr)
+}
+
+func (hs *hooksMixin) processHook(ctx context.Context, cmd Cmder) error {
+	return hs.current.process(ctx, cmd)
+}
+
+func (hs *hooksMixin) processPipelineHook(ctx context.Context, cmds []Cmder) error {
+	return hs.current.pipeline(ctx, cmds)
+}
+
+func (hs *hooksMixin) processTxPipelineHook(ctx context.Context, cmds []Cmder) error {
+	return hs.current.txPipeline(ctx, cmds)
+}
+
+//------------------------------------------------------------------------------
+
+type baseClient struct {
+	opt      *Options
+	connPool pool.Pooler
+
+	onClose func() error // hook called when client is closed
+}
+
+func (c *baseClient) clone() *baseClient {
+	clone := *c
+	return &clone
+}
+
+func (c *baseClient) withTimeout(timeout time.Duration) *baseClient {
+	opt := c.opt.clone()
+	opt.ReadTimeout = timeout
+	opt.WriteTimeout = timeout
+
+	clone := c.clone()
+	clone.opt = opt
+
+	return clone
+}
+
+func (c *baseClient) String() string {
+	return fmt.Sprintf("Redis<%s db:%d>", c.getAddr(), c.opt.DB)
+}
+
+func (c *baseClient) newConn(ctx context.Context) (*pool.Conn, error) {
+	cn, err := c.connPool.NewConn(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	err = c.initConn(ctx, cn)
+	if err != nil {
+		_ = c.connPool.CloseConn(cn)
+		return nil, err
+	}
+
+	return cn, nil
+}
+
+func (c *baseClient) getConn(ctx context.Context) (*pool.Conn, error) {
+	if c.opt.Limiter != nil {
+		err := c.opt.Limiter.Allow()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	cn, err := c._getConn(ctx)
+	if err != nil {
+		if c.opt.Limiter != nil {
+			c.opt.Limiter.ReportResult(err)
+		}
+		return nil, err
+	}
+
+	return cn, nil
+}
+
+func (c *baseClient) _getConn(ctx context.Context) (*pool.Conn, error) {
+	cn, err := c.connPool.Get(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	if cn.Inited {
+		return cn, nil
+	}
+
+	if err := c.initConn(ctx, cn); err != nil {
+		c.connPool.Remove(ctx, cn, err)
+		if err := errors.Unwrap(err); err != nil {
+			return nil, err
+		}
+		return nil, err
+	}
+
+	return cn, nil
+}
+
+func (c *baseClient) initConn(ctx context.Context, cn *pool.Conn) error {
+	if cn.Inited {
+		return nil
+	}
+	cn.Inited = true
+
+	username, password := c.opt.Username, c.opt.Password
+	if c.opt.CredentialsProvider != nil {
+		username, password = c.opt.CredentialsProvider()
+	}
+
+	connPool := pool.NewSingleConnPool(c.connPool, cn)
+	conn := newConn(c.opt, connPool)
+
+	var auth bool
+	protocol := c.opt.Protocol
+	// By default, use RESP3 in current version.
+	if protocol < 2 {
+		protocol = 3
+	}
+
+	// for redis-server versions that do not support the HELLO command,
+	// RESP2 will continue to be used.
+	if err := conn.Hello(ctx, protocol, username, password, "").Err(); err == nil {
+		auth = true
+	} else if !isRedisError(err) {
+		// When the server responds with the RESP protocol and the result is not a normal
+		// execution result of the HELLO command, we consider it to be an indication that
+		// the server does not support the HELLO command.
+		// The server may be a redis-server that does not support the HELLO command,
+		// or it could be DragonflyDB or a third-party redis-proxy. They all respond
+		// with different error string results for unsupported commands, making it
+		// difficult to rely on error strings to determine all results.
+		return err
+	}
+
+	_, err := conn.Pipelined(ctx, func(pipe Pipeliner) error {
+		if !auth && password != "" {
+			if username != "" {
+				pipe.AuthACL(ctx, username, password)
+			} else {
+				pipe.Auth(ctx, password)
+			}
+		}
+
+		if c.opt.DB > 0 {
+			pipe.Select(ctx, c.opt.DB)
+		}
+
+		if c.opt.readOnly {
+			pipe.ReadOnly(ctx)
+		}
+
+		if c.opt.ClientName != "" {
+			pipe.ClientSetName(ctx, c.opt.ClientName)
+		}
+
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	if c.opt.OnConnect != nil {
+		return c.opt.OnConnect(ctx, conn)
+	}
+	return nil
+}
+
+func (c *baseClient) releaseConn(ctx context.Context, cn *pool.Conn, err error) {
+	if c.opt.Limiter != nil {
+		c.opt.Limiter.ReportResult(err)
+	}
+
+	if isBadConn(err, false, c.opt.Addr) {
+		c.connPool.Remove(ctx, cn, err)
+	} else {
+		c.connPool.Put(ctx, cn)
+	}
+}
+
+func (c *baseClient) withConn(
+	ctx context.Context, fn func(context.Context, *pool.Conn) error,
+) error {
+	cn, err := c.getConn(ctx)
+	if err != nil {
+		return err
+	}
+
+	var fnErr error
+	defer func() {
+		c.releaseConn(ctx, cn, fnErr)
+	}()
+
+	fnErr = fn(ctx, cn)
+
+	return fnErr
+}
+
+func (c *baseClient) dial(ctx context.Context, network, addr string) (net.Conn, error) {
+	return c.opt.Dialer(ctx, network, addr)
+}
+
+func (c *baseClient) process(ctx context.Context, cmd Cmder) error {
+	var lastErr error
+	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
+		attempt := attempt
+
+		retry, err := c._process(ctx, cmd, attempt)
+		if err == nil || !retry {
+			return err
+		}
+
+		lastErr = err
+	}
+	return lastErr
+}
+
+func (c *baseClient) _process(ctx context.Context, cmd Cmder, attempt int) (bool, error) {
+	if attempt > 0 {
+		if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+			return false, err
+		}
+	}
+
+	retryTimeout := uint32(0)
+	if err := c.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
+		if err := cn.WithWriter(c.context(ctx), c.opt.WriteTimeout, func(wr *proto.Writer) error {
+			return writeCmd(wr, cmd)
+		}); err != nil {
+			atomic.StoreUint32(&retryTimeout, 1)
+			return err
+		}
+
+		if err := cn.WithReader(c.context(ctx), c.cmdTimeout(cmd), cmd.readReply); err != nil {
+			if cmd.readTimeout() == nil {
+				atomic.StoreUint32(&retryTimeout, 1)
+			} else {
+				atomic.StoreUint32(&retryTimeout, 0)
+			}
+			return err
+		}
+
+		return nil
+	}); err != nil {
+		retry := shouldRetry(err, atomic.LoadUint32(&retryTimeout) == 1)
+		return retry, err
+	}
+
+	return false, nil
+}
+
+func (c *baseClient) retryBackoff(attempt int) time.Duration {
+	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
+}
+
+func (c *baseClient) cmdTimeout(cmd Cmder) time.Duration {
+	if timeout := cmd.readTimeout(); timeout != nil {
+		t := *timeout
+		if t == 0 {
+			return 0
+		}
+		return t + 10*time.Second
+	}
+	return c.opt.ReadTimeout
+}
+
+// Close closes the client, releasing any open resources.
+//
+// It is rare to Close a Client, as the Client is meant to be
+// long-lived and shared between many goroutines.
+func (c *baseClient) Close() error {
+	var firstErr error
+	if c.onClose != nil {
+		if err := c.onClose(); err != nil {
+			firstErr = err
+		}
+	}
+	if err := c.connPool.Close(); err != nil && firstErr == nil {
+		firstErr = err
+	}
+	return firstErr
+}
+
+func (c *baseClient) getAddr() string {
+	return c.opt.Addr
+}
+
+func (c *baseClient) processPipeline(ctx context.Context, cmds []Cmder) error {
+	if err := c.generalProcessPipeline(ctx, cmds, c.pipelineProcessCmds); err != nil {
+		return err
+	}
+	return cmdsFirstErr(cmds)
+}
+
+func (c *baseClient) processTxPipeline(ctx context.Context, cmds []Cmder) error {
+	if err := c.generalProcessPipeline(ctx, cmds, c.txPipelineProcessCmds); err != nil {
+		return err
+	}
+	return cmdsFirstErr(cmds)
+}
+
+type pipelineProcessor func(context.Context, *pool.Conn, []Cmder) (bool, error)
+
+func (c *baseClient) generalProcessPipeline(
+	ctx context.Context, cmds []Cmder, p pipelineProcessor,
+) error {
+	var lastErr error
+	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
+		if attempt > 0 {
+			if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+				setCmdsErr(cmds, err)
+				return err
+			}
+		}
+
+		// Enable retries by default to retry dial errors returned by withConn.
+		canRetry := true
+		lastErr = c.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
+			var err error
+			canRetry, err = p(ctx, cn, cmds)
+			return err
+		})
+		if lastErr == nil || !canRetry || !shouldRetry(lastErr, true) {
+			return lastErr
+		}
+	}
+	return lastErr
+}
+
+func (c *baseClient) pipelineProcessCmds(
+	ctx context.Context, cn *pool.Conn, cmds []Cmder,
+) (bool, error) {
+	if err := cn.WithWriter(c.context(ctx), c.opt.WriteTimeout, func(wr *proto.Writer) error {
+		return writeCmds(wr, cmds)
+	}); err != nil {
+		setCmdsErr(cmds, err)
+		return true, err
+	}
+
+	if err := cn.WithReader(c.context(ctx), c.opt.ReadTimeout, func(rd *proto.Reader) error {
+		return pipelineReadCmds(rd, cmds)
+	}); err != nil {
+		return true, err
+	}
+
+	return false, nil
+}
+
+func pipelineReadCmds(rd *proto.Reader, cmds []Cmder) error {
+	for i, cmd := range cmds {
+		err := cmd.readReply(rd)
+		cmd.SetErr(err)
+		if err != nil && !isRedisError(err) {
+			setCmdsErr(cmds[i+1:], err)
+			return err
+		}
+	}
+	// Retry errors like "LOADING redis is loading the dataset in memory".
+	return cmds[0].Err()
+}
+
+func (c *baseClient) txPipelineProcessCmds(
+	ctx context.Context, cn *pool.Conn, cmds []Cmder,
+) (bool, error) {
+	if err := cn.WithWriter(c.context(ctx), c.opt.WriteTimeout, func(wr *proto.Writer) error {
+		return writeCmds(wr, cmds)
+	}); err != nil {
+		setCmdsErr(cmds, err)
+		return true, err
+	}
+
+	if err := cn.WithReader(c.context(ctx), c.opt.ReadTimeout, func(rd *proto.Reader) error {
+		statusCmd := cmds[0].(*StatusCmd)
+		// Trim multi and exec.
+		trimmedCmds := cmds[1 : len(cmds)-1]
+
+		if err := txPipelineReadQueued(rd, statusCmd, trimmedCmds); err != nil {
+			setCmdsErr(cmds, err)
+			return err
+		}
+
+		return pipelineReadCmds(rd, trimmedCmds)
+	}); err != nil {
+		return false, err
+	}
+
+	return false, nil
+}
+
+func txPipelineReadQueued(rd *proto.Reader, statusCmd *StatusCmd, cmds []Cmder) error {
+	// Parse +OK.
+	if err := statusCmd.readReply(rd); err != nil {
+		return err
+	}
+
+	// Parse +QUEUED.
+	for range cmds {
+		if err := statusCmd.readReply(rd); err != nil && !isRedisError(err) {
+			return err
+		}
+	}
+
+	// Parse number of replies.
+	line, err := rd.ReadLine()
+	if err != nil {
+		if err == Nil {
+			err = TxFailedErr
+		}
+		return err
+	}
+
+	if line[0] != proto.RespArray {
+		return fmt.Errorf("redis: expected '*', but got line %q", line)
+	}
+
+	return nil
+}
+
+func (c *baseClient) context(ctx context.Context) context.Context {
+	if c.opt.ContextTimeoutEnabled {
+		return ctx
+	}
+	return context.Background()
+}
+
+//------------------------------------------------------------------------------
+
+// Client is a Redis client representing a pool of zero or more underlying connections.
+// It's safe for concurrent use by multiple goroutines.
+//
+// Client creates and frees connections automatically; it also maintains a free pool
+// of idle connections. You can control the pool size with Config.PoolSize option.
+type Client struct {
+	*baseClient
+	cmdable
+	hooksMixin
+}
+
+// NewClient returns a client to the Redis Server specified by Options.
+func NewClient(opt *Options) *Client {
+	opt.init()
+
+	c := Client{
+		baseClient: &baseClient{
+			opt: opt,
+		},
+	}
+	c.init()
+	c.connPool = newConnPool(opt, c.dialHook)
+
+	return &c
+}
+
+func (c *Client) init() {
+	c.cmdable = c.Process
+	c.initHooks(hooks{
+		dial:       c.baseClient.dial,
+		process:    c.baseClient.process,
+		pipeline:   c.baseClient.processPipeline,
+		txPipeline: c.baseClient.processTxPipeline,
+	})
+}
+
+func (c *Client) WithTimeout(timeout time.Duration) *Client {
+	clone := *c
+	clone.baseClient = c.baseClient.withTimeout(timeout)
+	clone.init()
+	return &clone
+}
+
+func (c *Client) Conn() *Conn {
+	return newConn(c.opt, pool.NewStickyConnPool(c.connPool))
+}
+
+// Do create a Cmd from the args and processes the cmd.
+func (c *Client) Do(ctx context.Context, args ...interface{}) *Cmd {
+	cmd := NewCmd(ctx, args...)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+func (c *Client) Process(ctx context.Context, cmd Cmder) error {
+	err := c.processHook(ctx, cmd)
+	cmd.SetErr(err)
+	return err
+}
+
+// Options returns read-only Options that were used to create the client.
+func (c *Client) Options() *Options {
+	return c.opt
+}
+
+type PoolStats pool.Stats
+
+// PoolStats returns connection pool stats.
+func (c *Client) PoolStats() *PoolStats {
+	stats := c.connPool.Stats()
+	return (*PoolStats)(stats)
+}
+
+func (c *Client) Pipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipeline().Pipelined(ctx, fn)
+}
+
+func (c *Client) Pipeline() Pipeliner {
+	pipe := Pipeline{
+		exec: pipelineExecer(c.processPipelineHook),
+	}
+	pipe.init()
+	return &pipe
+}
+
+func (c *Client) TxPipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.TxPipeline().Pipelined(ctx, fn)
+}
+
+// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
+func (c *Client) TxPipeline() Pipeliner {
+	pipe := Pipeline{
+		exec: func(ctx context.Context, cmds []Cmder) error {
+			cmds = wrapMultiExec(ctx, cmds)
+			return c.processTxPipelineHook(ctx, cmds)
+		},
+	}
+	pipe.init()
+	return &pipe
+}
+
+func (c *Client) pubSub() *PubSub {
+	pubsub := &PubSub{
+		opt: c.opt,
+
+		newConn: func(ctx context.Context, channels []string) (*pool.Conn, error) {
+			return c.newConn(ctx)
+		},
+		closeConn: c.connPool.CloseConn,
+	}
+	pubsub.init()
+	return pubsub
+}
+
+// Subscribe subscribes the client to the specified channels.
+// Channels can be omitted to create empty subscription.
+// Note that this method does not wait on a response from Redis, so the
+// subscription may not be active immediately. To force the connection to wait,
+// you may call the Receive() method on the returned *PubSub like so:
+//
+//	sub := client.Subscribe(queryResp)
+//	iface, err := sub.Receive()
+//	if err != nil {
+//	    // handle error
+//	}
+//
+//	// Should be *Subscription, but others are possible if other actions have been
+//	// taken on sub since it was created.
+//	switch iface.(type) {
+//	case *Subscription:
+//	    // subscribe succeeded
+//	case *Message:
+//	    // received first message
+//	case *Pong:
+//	    // pong received
+//	default:
+//	    // handle error
+//	}
+//
+//	ch := sub.Channel()
+func (c *Client) Subscribe(ctx context.Context, channels ...string) *PubSub {
+	pubsub := c.pubSub()
+	if len(channels) > 0 {
+		_ = pubsub.Subscribe(ctx, channels...)
+	}
+	return pubsub
+}
+
+// PSubscribe subscribes the client to the given patterns.
+// Patterns can be omitted to create empty subscription.
+func (c *Client) PSubscribe(ctx context.Context, channels ...string) *PubSub {
+	pubsub := c.pubSub()
+	if len(channels) > 0 {
+		_ = pubsub.PSubscribe(ctx, channels...)
+	}
+	return pubsub
+}
+
+// SSubscribe Subscribes the client to the specified shard channels.
+// Channels can be omitted to create empty subscription.
+func (c *Client) SSubscribe(ctx context.Context, channels ...string) *PubSub {
+	pubsub := c.pubSub()
+	if len(channels) > 0 {
+		_ = pubsub.SSubscribe(ctx, channels...)
+	}
+	return pubsub
+}
+
+//------------------------------------------------------------------------------
+
+// Conn represents a single Redis connection rather than a pool of connections.
+// Prefer running commands from Client unless there is a specific need
+// for a continuous single Redis connection.
+type Conn struct {
+	baseClient
+	cmdable
+	statefulCmdable
+	hooksMixin
+}
+
+func newConn(opt *Options, connPool pool.Pooler) *Conn {
+	c := Conn{
+		baseClient: baseClient{
+			opt:      opt,
+			connPool: connPool,
+		},
+	}
+
+	c.cmdable = c.Process
+	c.statefulCmdable = c.Process
+	c.initHooks(hooks{
+		dial:       c.baseClient.dial,
+		process:    c.baseClient.process,
+		pipeline:   c.baseClient.processPipeline,
+		txPipeline: c.baseClient.processTxPipeline,
+	})
+
+	return &c
+}
+
+func (c *Conn) Process(ctx context.Context, cmd Cmder) error {
+	err := c.processHook(ctx, cmd)
+	cmd.SetErr(err)
+	return err
+}
+
+func (c *Conn) Pipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipeline().Pipelined(ctx, fn)
+}
+
+func (c *Conn) Pipeline() Pipeliner {
+	pipe := Pipeline{
+		exec: c.processPipelineHook,
+	}
+	pipe.init()
+	return &pipe
+}
+
+func (c *Conn) TxPipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.TxPipeline().Pipelined(ctx, fn)
+}
+
+// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
+func (c *Conn) TxPipeline() Pipeliner {
+	pipe := Pipeline{
+		exec: func(ctx context.Context, cmds []Cmder) error {
+			cmds = wrapMultiExec(ctx, cmds)
+			return c.processTxPipelineHook(ctx, cmds)
+		},
+	}
+	pipe.init()
+	return &pipe
+}

vendor/github.com/redis/go-redis/v9/redis_gears.go

@@ -0,0 +1,161 @@
+package redis
+
+import (
+	"context"
+	"fmt"
+	"strings"
+)
+
+type gearsCmdable interface {
+	TFunctionLoad(ctx context.Context, lib string) *StatusCmd
+	TFunctionLoadArgs(ctx context.Context, lib string, options *TFunctionLoadOptions) *StatusCmd
+	TFunctionDelete(ctx context.Context, libName string) *StatusCmd
+	TFunctionList(ctx context.Context) *MapStringInterfaceSliceCmd
+	TFunctionListArgs(ctx context.Context, options *TFunctionListOptions) *MapStringInterfaceSliceCmd
+	TFCall(ctx context.Context, libName string, funcName string, numKeys int) *Cmd
+	TFCallArgs(ctx context.Context, libName string, funcName string, numKeys int, options *TFCallOptions) *Cmd
+	TFCallASYNC(ctx context.Context, libName string, funcName string, numKeys int) *Cmd
+	TFCallASYNCArgs(ctx context.Context, libName string, funcName string, numKeys int, options *TFCallOptions) *Cmd
+}
+type TFunctionLoadOptions struct {
+	Replace bool
+	Config  string
+}
+
+type TFunctionListOptions struct {
+	Withcode bool
+	Verbose  int
+	Library  string
+}
+
+type TFCallOptions struct {
+	Keys      []string
+	Arguments []string
+}
+
+// TFunctionLoad - load a new JavaScript library into Redis.
+// For more information - https://redis.io/commands/tfunction-load/
+func (c cmdable) TFunctionLoad(ctx context.Context, lib string) *StatusCmd {
+	args := []interface{}{"TFUNCTION", "LOAD", lib}
+	cmd := NewStatusCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+func (c cmdable) TFunctionLoadArgs(ctx context.Context, lib string, options *TFunctionLoadOptions) *StatusCmd {
+	args := []interface{}{"TFUNCTION", "LOAD"}
+	if options != nil {
+		if options.Replace {
+			args = append(args, "REPLACE")
+		}
+		if options.Config != "" {
+			args = append(args, "CONFIG", options.Config)
+		}
+	}
+	args = append(args, lib)
+	cmd := NewStatusCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+// TFunctionDelete - delete a JavaScript library from Redis.
+// For more information - https://redis.io/commands/tfunction-delete/
+func (c cmdable) TFunctionDelete(ctx context.Context, libName string) *StatusCmd {
+	args := []interface{}{"TFUNCTION", "DELETE", libName}
+	cmd := NewStatusCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+// TFunctionList - list the functions with additional information about each function.
+// For more information - https://redis.io/commands/tfunction-list/
+func (c cmdable) TFunctionList(ctx context.Context) *MapStringInterfaceSliceCmd {
+	args := []interface{}{"TFUNCTION", "LIST"}
+	cmd := NewMapStringInterfaceSliceCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+func (c cmdable) TFunctionListArgs(ctx context.Context, options *TFunctionListOptions) *MapStringInterfaceSliceCmd {
+	args := []interface{}{"TFUNCTION", "LIST"}
+	if options != nil {
+		if options.Withcode {
+			args = append(args, "WITHCODE")
+		}
+		if options.Verbose != 0 {
+			v := strings.Repeat("v", options.Verbose)
+			args = append(args, v)
+		}
+		if options.Library != "" {
+			args = append(args, "LIBRARY", options.Library)
+
+		}
+	}
+	cmd := NewMapStringInterfaceSliceCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+// TFCall - invoke a function.
+// For more information - https://redis.io/commands/tfcall/
+func (c cmdable) TFCall(ctx context.Context, libName string, funcName string, numKeys int) *Cmd {
+	lf := libName + "." + funcName
+	args := []interface{}{"TFCALL", lf, numKeys}
+	cmd := NewCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+func (c cmdable) TFCallArgs(ctx context.Context, libName string, funcName string, numKeys int, options *TFCallOptions) *Cmd {
+	lf := libName + "." + funcName
+	args := []interface{}{"TFCALL", lf, numKeys}
+	if options != nil {
+		if options.Keys != nil {
+			for _, key := range options.Keys {
+
+				args = append(args, key)
+			}
+		}
+		if options.Arguments != nil {
+			for _, key := range options.Arguments {
+
+				args = append(args, key)
+			}
+		}
+	}
+	cmd := NewCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+// TFCallASYNC - invoke an asynchronous JavaScript function (coroutine).
+// For more information - https://redis.io/commands/TFCallASYNC/
+func (c cmdable) TFCallASYNC(ctx context.Context, libName string, funcName string, numKeys int) *Cmd {
+	lf := fmt.Sprintf("%s.%s", libName, funcName)
+	args := []interface{}{"TFCALLASYNC", lf, numKeys}
+	cmd := NewCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+func (c cmdable) TFCallASYNCArgs(ctx context.Context, libName string, funcName string, numKeys int, options *TFCallOptions) *Cmd {
+	lf := fmt.Sprintf("%s.%s", libName, funcName)
+	args := []interface{}{"TFCALLASYNC", lf, numKeys}
+	if options != nil {
+		if options.Keys != nil {
+			for _, key := range options.Keys {
+
+				args = append(args, key)
+			}
+		}
+		if options.Arguments != nil {
+			for _, key := range options.Arguments {
+
+				args = append(args, key)
+			}
+		}
+	}
+	cmd := NewCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}

vendor/github.com/redis/go-redis/v9/result.go

@@ -0,0 +1,188 @@
+package redis
+
+import "time"
+
+// NewCmdResult returns a Cmd initialised with val and err for testing.
+func NewCmdResult(val interface{}, err error) *Cmd {
+	var cmd Cmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewSliceResult returns a SliceCmd initialised with val and err for testing.
+func NewSliceResult(val []interface{}, err error) *SliceCmd {
+	var cmd SliceCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewStatusResult returns a StatusCmd initialised with val and err for testing.
+func NewStatusResult(val string, err error) *StatusCmd {
+	var cmd StatusCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewIntResult returns an IntCmd initialised with val and err for testing.
+func NewIntResult(val int64, err error) *IntCmd {
+	var cmd IntCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewDurationResult returns a DurationCmd initialised with val and err for testing.
+func NewDurationResult(val time.Duration, err error) *DurationCmd {
+	var cmd DurationCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewBoolResult returns a BoolCmd initialised with val and err for testing.
+func NewBoolResult(val bool, err error) *BoolCmd {
+	var cmd BoolCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewStringResult returns a StringCmd initialised with val and err for testing.
+func NewStringResult(val string, err error) *StringCmd {
+	var cmd StringCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewFloatResult returns a FloatCmd initialised with val and err for testing.
+func NewFloatResult(val float64, err error) *FloatCmd {
+	var cmd FloatCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewStringSliceResult returns a StringSliceCmd initialised with val and err for testing.
+func NewStringSliceResult(val []string, err error) *StringSliceCmd {
+	var cmd StringSliceCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewBoolSliceResult returns a BoolSliceCmd initialised with val and err for testing.
+func NewBoolSliceResult(val []bool, err error) *BoolSliceCmd {
+	var cmd BoolSliceCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewMapStringStringResult returns a MapStringStringCmd initialised with val and err for testing.
+func NewMapStringStringResult(val map[string]string, err error) *MapStringStringCmd {
+	var cmd MapStringStringCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewMapStringIntCmdResult returns a MapStringIntCmd initialised with val and err for testing.
+func NewMapStringIntCmdResult(val map[string]int64, err error) *MapStringIntCmd {
+	var cmd MapStringIntCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewTimeCmdResult returns a TimeCmd initialised with val and err for testing.
+func NewTimeCmdResult(val time.Time, err error) *TimeCmd {
+	var cmd TimeCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewZSliceCmdResult returns a ZSliceCmd initialised with val and err for testing.
+func NewZSliceCmdResult(val []Z, err error) *ZSliceCmd {
+	var cmd ZSliceCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewZWithKeyCmdResult returns a ZWithKeyCmd initialised with val and err for testing.
+func NewZWithKeyCmdResult(val *ZWithKey, err error) *ZWithKeyCmd {
+	var cmd ZWithKeyCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewScanCmdResult returns a ScanCmd initialised with val and err for testing.
+func NewScanCmdResult(keys []string, cursor uint64, err error) *ScanCmd {
+	var cmd ScanCmd
+	cmd.page = keys
+	cmd.cursor = cursor
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewClusterSlotsCmdResult returns a ClusterSlotsCmd initialised with val and err for testing.
+func NewClusterSlotsCmdResult(val []ClusterSlot, err error) *ClusterSlotsCmd {
+	var cmd ClusterSlotsCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewGeoLocationCmdResult returns a GeoLocationCmd initialised with val and err for testing.
+func NewGeoLocationCmdResult(val []GeoLocation, err error) *GeoLocationCmd {
+	var cmd GeoLocationCmd
+	cmd.locations = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewGeoPosCmdResult returns a GeoPosCmd initialised with val and err for testing.
+func NewGeoPosCmdResult(val []*GeoPos, err error) *GeoPosCmd {
+	var cmd GeoPosCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewCommandsInfoCmdResult returns a CommandsInfoCmd initialised with val and err for testing.
+func NewCommandsInfoCmdResult(val map[string]*CommandInfo, err error) *CommandsInfoCmd {
+	var cmd CommandsInfoCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewXMessageSliceCmdResult returns a XMessageSliceCmd initialised with val and err for testing.
+func NewXMessageSliceCmdResult(val []XMessage, err error) *XMessageSliceCmd {
+	var cmd XMessageSliceCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewXStreamSliceCmdResult returns a XStreamSliceCmd initialised with val and err for testing.
+func NewXStreamSliceCmdResult(val []XStream, err error) *XStreamSliceCmd {
+	var cmd XStreamSliceCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewXPendingResult returns a XPendingCmd initialised with val and err for testing.
+func NewXPendingResult(val *XPending, err error) *XPendingCmd {
+	var cmd XPendingCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}

vendor/github.com/redis/go-redis/v9/ring.go

@@ -0,0 +1,832 @@
+package redis
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"strconv"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/cespare/xxhash/v2"
+	"github.com/dgryski/go-rendezvous" //nolint
+
+	"github.com/redis/go-redis/v9/internal"
+	"github.com/redis/go-redis/v9/internal/hashtag"
+	"github.com/redis/go-redis/v9/internal/pool"
+	"github.com/redis/go-redis/v9/internal/rand"
+)
+
+var errRingShardsDown = errors.New("redis: all ring shards are down")
+
+//------------------------------------------------------------------------------
+
+type ConsistentHash interface {
+	Get(string) string
+}
+
+type rendezvousWrapper struct {
+	*rendezvous.Rendezvous
+}
+
+func (w rendezvousWrapper) Get(key string) string {
+	return w.Lookup(key)
+}
+
+func newRendezvous(shards []string) ConsistentHash {
+	return rendezvousWrapper{rendezvous.New(shards, xxhash.Sum64String)}
+}
+
+//------------------------------------------------------------------------------
+
+// RingOptions are used to configure a ring client and should be
+// passed to NewRing.
+type RingOptions struct {
+	// Map of name => host:port addresses of ring shards.
+	Addrs map[string]string
+
+	// NewClient creates a shard client with provided options.
+	NewClient func(opt *Options) *Client
+
+	// ClientName will execute the `CLIENT SETNAME ClientName` command for each conn.
+	ClientName string
+
+	// Frequency of PING commands sent to check shards availability.
+	// Shard is considered down after 3 subsequent failed checks.
+	HeartbeatFrequency time.Duration
+
+	// NewConsistentHash returns a consistent hash that is used
+	// to distribute keys across the shards.
+	//
+	// See https://medium.com/@dgryski/consistent-hashing-algorithmic-tradeoffs-ef6b8e2fcae8
+	// for consistent hashing algorithmic tradeoffs.
+	NewConsistentHash func(shards []string) ConsistentHash
+
+	// Following options are copied from Options struct.
+
+	Dialer    func(ctx context.Context, network, addr string) (net.Conn, error)
+	OnConnect func(ctx context.Context, cn *Conn) error
+
+	Protocol int
+	Username string
+	Password string
+	DB       int
+
+	MaxRetries      int
+	MinRetryBackoff time.Duration
+	MaxRetryBackoff time.Duration
+
+	DialTimeout  time.Duration
+	ReadTimeout  time.Duration
+	WriteTimeout time.Duration
+
+	// PoolFIFO uses FIFO mode for each node connection pool GET/PUT (default LIFO).
+	PoolFIFO bool
+
+	PoolSize        int
+	PoolTimeout     time.Duration
+	MinIdleConns    int
+	MaxIdleConns    int
+	ConnMaxIdleTime time.Duration
+	ConnMaxLifetime time.Duration
+
+	TLSConfig *tls.Config
+	Limiter   Limiter
+}
+
+func (opt *RingOptions) init() {
+	if opt.NewClient == nil {
+		opt.NewClient = func(opt *Options) *Client {
+			return NewClient(opt)
+		}
+	}
+
+	if opt.HeartbeatFrequency == 0 {
+		opt.HeartbeatFrequency = 500 * time.Millisecond
+	}
+
+	if opt.NewConsistentHash == nil {
+		opt.NewConsistentHash = newRendezvous
+	}
+
+	if opt.MaxRetries == -1 {
+		opt.MaxRetries = 0
+	} else if opt.MaxRetries == 0 {
+		opt.MaxRetries = 3
+	}
+	switch opt.MinRetryBackoff {
+	case -1:
+		opt.MinRetryBackoff = 0
+	case 0:
+		opt.MinRetryBackoff = 8 * time.Millisecond
+	}
+	switch opt.MaxRetryBackoff {
+	case -1:
+		opt.MaxRetryBackoff = 0
+	case 0:
+		opt.MaxRetryBackoff = 512 * time.Millisecond
+	}
+}
+
+func (opt *RingOptions) clientOptions() *Options {
+	return &Options{
+		ClientName: opt.ClientName,
+		Dialer:     opt.Dialer,
+		OnConnect:  opt.OnConnect,
+
+		Protocol: opt.Protocol,
+		Username: opt.Username,
+		Password: opt.Password,
+		DB:       opt.DB,
+
+		MaxRetries: -1,
+
+		DialTimeout:  opt.DialTimeout,
+		ReadTimeout:  opt.ReadTimeout,
+		WriteTimeout: opt.WriteTimeout,
+
+		PoolFIFO:        opt.PoolFIFO,
+		PoolSize:        opt.PoolSize,
+		PoolTimeout:     opt.PoolTimeout,
+		MinIdleConns:    opt.MinIdleConns,
+		MaxIdleConns:    opt.MaxIdleConns,
+		ConnMaxIdleTime: opt.ConnMaxIdleTime,
+		ConnMaxLifetime: opt.ConnMaxLifetime,
+
+		TLSConfig: opt.TLSConfig,
+		Limiter:   opt.Limiter,
+	}
+}
+
+//------------------------------------------------------------------------------
+
+type ringShard struct {
+	Client *Client
+	down   int32
+	addr   string
+}
+
+func newRingShard(opt *RingOptions, addr string) *ringShard {
+	clopt := opt.clientOptions()
+	clopt.Addr = addr
+
+	return &ringShard{
+		Client: opt.NewClient(clopt),
+		addr:   addr,
+	}
+}
+
+func (shard *ringShard) String() string {
+	var state string
+	if shard.IsUp() {
+		state = "up"
+	} else {
+		state = "down"
+	}
+	return fmt.Sprintf("%s is %s", shard.Client, state)
+}
+
+func (shard *ringShard) IsDown() bool {
+	const threshold = 3
+	return atomic.LoadInt32(&shard.down) >= threshold
+}
+
+func (shard *ringShard) IsUp() bool {
+	return !shard.IsDown()
+}
+
+// Vote votes to set shard state and returns true if state was changed.
+func (shard *ringShard) Vote(up bool) bool {
+	if up {
+		changed := shard.IsDown()
+		atomic.StoreInt32(&shard.down, 0)
+		return changed
+	}
+
+	if shard.IsDown() {
+		return false
+	}
+
+	atomic.AddInt32(&shard.down, 1)
+	return shard.IsDown()
+}
+
+//------------------------------------------------------------------------------
+
+type ringSharding struct {
+	opt *RingOptions
+
+	mu        sync.RWMutex
+	shards    *ringShards
+	closed    bool
+	hash      ConsistentHash
+	numShard  int
+	onNewNode []func(rdb *Client)
+
+	// ensures exclusive access to SetAddrs so there is no need
+	// to hold mu for the duration of potentially long shard creation
+	setAddrsMu sync.Mutex
+}
+
+type ringShards struct {
+	m    map[string]*ringShard
+	list []*ringShard
+}
+
+func newRingSharding(opt *RingOptions) *ringSharding {
+	c := &ringSharding{
+		opt: opt,
+	}
+	c.SetAddrs(opt.Addrs)
+
+	return c
+}
+
+func (c *ringSharding) OnNewNode(fn func(rdb *Client)) {
+	c.mu.Lock()
+	c.onNewNode = append(c.onNewNode, fn)
+	c.mu.Unlock()
+}
+
+// SetAddrs replaces the shards in use, such that you can increase and
+// decrease number of shards, that you use. It will reuse shards that
+// existed before and close the ones that will not be used anymore.
+func (c *ringSharding) SetAddrs(addrs map[string]string) {
+	c.setAddrsMu.Lock()
+	defer c.setAddrsMu.Unlock()
+
+	cleanup := func(shards map[string]*ringShard) {
+		for addr, shard := range shards {
+			if err := shard.Client.Close(); err != nil {
+				internal.Logger.Printf(context.Background(), "shard.Close %s failed: %s", addr, err)
+			}
+		}
+	}
+
+	c.mu.RLock()
+	if c.closed {
+		c.mu.RUnlock()
+		return
+	}
+	existing := c.shards
+	c.mu.RUnlock()
+
+	shards, created, unused := c.newRingShards(addrs, existing)
+
+	c.mu.Lock()
+	if c.closed {
+		cleanup(created)
+		c.mu.Unlock()
+		return
+	}
+	c.shards = shards
+	c.rebalanceLocked()
+	c.mu.Unlock()
+
+	cleanup(unused)
+}
+
+func (c *ringSharding) newRingShards(
+	addrs map[string]string, existing *ringShards,
+) (shards *ringShards, created, unused map[string]*ringShard) {
+
+	shards = &ringShards{m: make(map[string]*ringShard, len(addrs))}
+	created = make(map[string]*ringShard) // indexed by addr
+	unused = make(map[string]*ringShard)  // indexed by addr
+
+	if existing != nil {
+		for _, shard := range existing.list {
+			unused[shard.addr] = shard
+		}
+	}
+
+	for name, addr := range addrs {
+		if shard, ok := unused[addr]; ok {
+			shards.m[name] = shard
+			delete(unused, addr)
+		} else {
+			shard := newRingShard(c.opt, addr)
+			shards.m[name] = shard
+			created[addr] = shard
+
+			for _, fn := range c.onNewNode {
+				fn(shard.Client)
+			}
+		}
+	}
+
+	for _, shard := range shards.m {
+		shards.list = append(shards.list, shard)
+	}
+
+	return
+}
+
+func (c *ringSharding) List() []*ringShard {
+	var list []*ringShard
+
+	c.mu.RLock()
+	if !c.closed {
+		list = c.shards.list
+	}
+	c.mu.RUnlock()
+
+	return list
+}
+
+func (c *ringSharding) Hash(key string) string {
+	key = hashtag.Key(key)
+
+	var hash string
+
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+
+	if c.numShard > 0 {
+		hash = c.hash.Get(key)
+	}
+
+	return hash
+}
+
+func (c *ringSharding) GetByKey(key string) (*ringShard, error) {
+	key = hashtag.Key(key)
+
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+
+	if c.closed {
+		return nil, pool.ErrClosed
+	}
+
+	if c.numShard == 0 {
+		return nil, errRingShardsDown
+	}
+
+	shardName := c.hash.Get(key)
+	if shardName == "" {
+		return nil, errRingShardsDown
+	}
+	return c.shards.m[shardName], nil
+}
+
+func (c *ringSharding) GetByName(shardName string) (*ringShard, error) {
+	if shardName == "" {
+		return c.Random()
+	}
+
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+
+	return c.shards.m[shardName], nil
+}
+
+func (c *ringSharding) Random() (*ringShard, error) {
+	return c.GetByKey(strconv.Itoa(rand.Int()))
+}
+
+// Heartbeat monitors state of each shard in the ring.
+func (c *ringSharding) Heartbeat(ctx context.Context, frequency time.Duration) {
+	ticker := time.NewTicker(frequency)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			var rebalance bool
+
+			for _, shard := range c.List() {
+				err := shard.Client.Ping(ctx).Err()
+				isUp := err == nil || err == pool.ErrPoolTimeout
+				if shard.Vote(isUp) {
+					internal.Logger.Printf(ctx, "ring shard state changed: %s", shard)
+					rebalance = true
+				}
+			}
+
+			if rebalance {
+				c.mu.Lock()
+				c.rebalanceLocked()
+				c.mu.Unlock()
+			}
+		case <-ctx.Done():
+			return
+		}
+	}
+}
+
+// rebalanceLocked removes dead shards from the Ring.
+// Requires c.mu locked.
+func (c *ringSharding) rebalanceLocked() {
+	if c.closed {
+		return
+	}
+	if c.shards == nil {
+		return
+	}
+
+	liveShards := make([]string, 0, len(c.shards.m))
+
+	for name, shard := range c.shards.m {
+		if shard.IsUp() {
+			liveShards = append(liveShards, name)
+		}
+	}
+
+	c.hash = c.opt.NewConsistentHash(liveShards)
+	c.numShard = len(liveShards)
+}
+
+func (c *ringSharding) Len() int {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+
+	return c.numShard
+}
+
+func (c *ringSharding) Close() error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if c.closed {
+		return nil
+	}
+	c.closed = true
+
+	var firstErr error
+
+	for _, shard := range c.shards.list {
+		if err := shard.Client.Close(); err != nil && firstErr == nil {
+			firstErr = err
+		}
+	}
+
+	c.hash = nil
+	c.shards = nil
+	c.numShard = 0
+
+	return firstErr
+}
+
+//------------------------------------------------------------------------------
+
+// Ring is a Redis client that uses consistent hashing to distribute
+// keys across multiple Redis servers (shards). It's safe for
+// concurrent use by multiple goroutines.
+//
+// Ring monitors the state of each shard and removes dead shards from
+// the ring. When a shard comes online it is added back to the ring. This
+// gives you maximum availability and partition tolerance, but no
+// consistency between different shards or even clients. Each client
+// uses shards that are available to the client and does not do any
+// coordination when shard state is changed.
+//
+// Ring should be used when you need multiple Redis servers for caching
+// and can tolerate losing data when one of the servers dies.
+// Otherwise you should use Redis Cluster.
+type Ring struct {
+	cmdable
+	hooksMixin
+
+	opt               *RingOptions
+	sharding          *ringSharding
+	cmdsInfoCache     *cmdsInfoCache
+	heartbeatCancelFn context.CancelFunc
+}
+
+func NewRing(opt *RingOptions) *Ring {
+	opt.init()
+
+	hbCtx, hbCancel := context.WithCancel(context.Background())
+
+	ring := Ring{
+		opt:               opt,
+		sharding:          newRingSharding(opt),
+		heartbeatCancelFn: hbCancel,
+	}
+
+	ring.cmdsInfoCache = newCmdsInfoCache(ring.cmdsInfo)
+	ring.cmdable = ring.Process
+
+	ring.initHooks(hooks{
+		process: ring.process,
+		pipeline: func(ctx context.Context, cmds []Cmder) error {
+			return ring.generalProcessPipeline(ctx, cmds, false)
+		},
+		txPipeline: func(ctx context.Context, cmds []Cmder) error {
+			return ring.generalProcessPipeline(ctx, cmds, true)
+		},
+	})
+
+	go ring.sharding.Heartbeat(hbCtx, opt.HeartbeatFrequency)
+
+	return &ring
+}
+
+func (c *Ring) SetAddrs(addrs map[string]string) {
+	c.sharding.SetAddrs(addrs)
+}
+
+// Do create a Cmd from the args and processes the cmd.
+func (c *Ring) Do(ctx context.Context, args ...interface{}) *Cmd {
+	cmd := NewCmd(ctx, args...)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+func (c *Ring) Process(ctx context.Context, cmd Cmder) error {
+	err := c.processHook(ctx, cmd)
+	cmd.SetErr(err)
+	return err
+}
+
+// Options returns read-only Options that were used to create the client.
+func (c *Ring) Options() *RingOptions {
+	return c.opt
+}
+
+func (c *Ring) retryBackoff(attempt int) time.Duration {
+	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
+}
+
+// PoolStats returns accumulated connection pool stats.
+func (c *Ring) PoolStats() *PoolStats {
+	shards := c.sharding.List()
+	var acc PoolStats
+	for _, shard := range shards {
+		s := shard.Client.connPool.Stats()
+		acc.Hits += s.Hits
+		acc.Misses += s.Misses
+		acc.Timeouts += s.Timeouts
+		acc.TotalConns += s.TotalConns
+		acc.IdleConns += s.IdleConns
+	}
+	return &acc
+}
+
+// Len returns the current number of shards in the ring.
+func (c *Ring) Len() int {
+	return c.sharding.Len()
+}
+
+// Subscribe subscribes the client to the specified channels.
+func (c *Ring) Subscribe(ctx context.Context, channels ...string) *PubSub {
+	if len(channels) == 0 {
+		panic("at least one channel is required")
+	}
+
+	shard, err := c.sharding.GetByKey(channels[0])
+	if err != nil {
+		// TODO: return PubSub with sticky error
+		panic(err)
+	}
+	return shard.Client.Subscribe(ctx, channels...)
+}
+
+// PSubscribe subscribes the client to the given patterns.
+func (c *Ring) PSubscribe(ctx context.Context, channels ...string) *PubSub {
+	if len(channels) == 0 {
+		panic("at least one channel is required")
+	}
+
+	shard, err := c.sharding.GetByKey(channels[0])
+	if err != nil {
+		// TODO: return PubSub with sticky error
+		panic(err)
+	}
+	return shard.Client.PSubscribe(ctx, channels...)
+}
+
+// SSubscribe Subscribes the client to the specified shard channels.
+func (c *Ring) SSubscribe(ctx context.Context, channels ...string) *PubSub {
+	if len(channels) == 0 {
+		panic("at least one channel is required")
+	}
+	shard, err := c.sharding.GetByKey(channels[0])
+	if err != nil {
+		// TODO: return PubSub with sticky error
+		panic(err)
+	}
+	return shard.Client.SSubscribe(ctx, channels...)
+}
+
+func (c *Ring) OnNewNode(fn func(rdb *Client)) {
+	c.sharding.OnNewNode(fn)
+}
+
+// ForEachShard concurrently calls the fn on each live shard in the ring.
+// It returns the first error if any.
+func (c *Ring) ForEachShard(
+	ctx context.Context,
+	fn func(ctx context.Context, client *Client) error,
+) error {
+	shards := c.sharding.List()
+	var wg sync.WaitGroup
+	errCh := make(chan error, 1)
+	for _, shard := range shards {
+		if shard.IsDown() {
+			continue
+		}
+
+		wg.Add(1)
+		go func(shard *ringShard) {
+			defer wg.Done()
+			err := fn(ctx, shard.Client)
+			if err != nil {
+				select {
+				case errCh <- err:
+				default:
+				}
+			}
+		}(shard)
+	}
+	wg.Wait()
+
+	select {
+	case err := <-errCh:
+		return err
+	default:
+		return nil
+	}
+}
+
+func (c *Ring) cmdsInfo(ctx context.Context) (map[string]*CommandInfo, error) {
+	shards := c.sharding.List()
+	var firstErr error
+	for _, shard := range shards {
+		cmdsInfo, err := shard.Client.Command(ctx).Result()
+		if err == nil {
+			return cmdsInfo, nil
+		}
+		if firstErr == nil {
+			firstErr = err
+		}
+	}
+	if firstErr == nil {
+		return nil, errRingShardsDown
+	}
+	return nil, firstErr
+}
+
+func (c *Ring) cmdInfo(ctx context.Context, name string) *CommandInfo {
+	cmdsInfo, err := c.cmdsInfoCache.Get(ctx)
+	if err != nil {
+		return nil
+	}
+	info := cmdsInfo[name]
+	if info == nil {
+		internal.Logger.Printf(ctx, "info for cmd=%s not found", name)
+	}
+	return info
+}
+
+func (c *Ring) cmdShard(ctx context.Context, cmd Cmder) (*ringShard, error) {
+	cmdInfo := c.cmdInfo(ctx, cmd.Name())
+	pos := cmdFirstKeyPos(cmd, cmdInfo)
+	if pos == 0 {
+		return c.sharding.Random()
+	}
+	firstKey := cmd.stringArg(pos)
+	return c.sharding.GetByKey(firstKey)
+}
+
+func (c *Ring) process(ctx context.Context, cmd Cmder) error {
+	var lastErr error
+	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
+		if attempt > 0 {
+			if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+				return err
+			}
+		}
+
+		shard, err := c.cmdShard(ctx, cmd)
+		if err != nil {
+			return err
+		}
+
+		lastErr = shard.Client.Process(ctx, cmd)
+		if lastErr == nil || !shouldRetry(lastErr, cmd.readTimeout() == nil) {
+			return lastErr
+		}
+	}
+	return lastErr
+}
+
+func (c *Ring) Pipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipeline().Pipelined(ctx, fn)
+}
+
+func (c *Ring) Pipeline() Pipeliner {
+	pipe := Pipeline{
+		exec: pipelineExecer(c.processPipelineHook),
+	}
+	pipe.init()
+	return &pipe
+}
+
+func (c *Ring) TxPipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.TxPipeline().Pipelined(ctx, fn)
+}
+
+func (c *Ring) TxPipeline() Pipeliner {
+	pipe := Pipeline{
+		exec: func(ctx context.Context, cmds []Cmder) error {
+			cmds = wrapMultiExec(ctx, cmds)
+			return c.processTxPipelineHook(ctx, cmds)
+		},
+	}
+	pipe.init()
+	return &pipe
+}
+
+func (c *Ring) generalProcessPipeline(
+	ctx context.Context, cmds []Cmder, tx bool,
+) error {
+	if tx {
+		// Trim multi .. exec.
+		cmds = cmds[1 : len(cmds)-1]
+	}
+
+	cmdsMap := make(map[string][]Cmder)
+
+	for _, cmd := range cmds {
+		cmdInfo := c.cmdInfo(ctx, cmd.Name())
+		hash := cmd.stringArg(cmdFirstKeyPos(cmd, cmdInfo))
+		if hash != "" {
+			hash = c.sharding.Hash(hash)
+		}
+		cmdsMap[hash] = append(cmdsMap[hash], cmd)
+	}
+
+	var wg sync.WaitGroup
+	for hash, cmds := range cmdsMap {
+		wg.Add(1)
+		go func(hash string, cmds []Cmder) {
+			defer wg.Done()
+
+			// TODO: retry?
+			shard, err := c.sharding.GetByName(hash)
+			if err != nil {
+				setCmdsErr(cmds, err)
+				return
+			}
+
+			if tx {
+				cmds = wrapMultiExec(ctx, cmds)
+				_ = shard.Client.processTxPipelineHook(ctx, cmds)
+			} else {
+				_ = shard.Client.processPipelineHook(ctx, cmds)
+			}
+		}(hash, cmds)
+	}
+
+	wg.Wait()
+	return cmdsFirstErr(cmds)
+}
+
+func (c *Ring) Watch(ctx context.Context, fn func(*Tx) error, keys ...string) error {
+	if len(keys) == 0 {
+		return fmt.Errorf("redis: Watch requires at least one key")
+	}
+
+	var shards []*ringShard
+
+	for _, key := range keys {
+		if key != "" {
+			shard, err := c.sharding.GetByKey(hashtag.Key(key))
+			if err != nil {
+				return err
+			}
+
+			shards = append(shards, shard)
+		}
+	}
+
+	if len(shards) == 0 {
+		return fmt.Errorf("redis: Watch requires at least one shard")
+	}
+
+	if len(shards) > 1 {
+		for _, shard := range shards[1:] {
+			if shard.Client != shards[0].Client {
+				err := fmt.Errorf("redis: Watch requires all keys to be in the same shard")
+				return err
+			}
+		}
+	}
+
+	return shards[0].Client.Watch(ctx, fn, keys...)
+}
+
+// Close closes the ring client, releasing any open resources.
+//
+// It is rare to Close a Ring, as the Ring is meant to be long-lived
+// and shared between many goroutines.
+func (c *Ring) Close() error {
+	c.heartbeatCancelFn()
+
+	return c.sharding.Close()
+}

vendor/github.com/redis/go-redis/v9/script.go

@@ -0,0 +1,84 @@
+package redis
+
+import (
+	"context"
+	"crypto/sha1"
+	"encoding/hex"
+	"io"
+)
+
+type Scripter interface {
+	Eval(ctx context.Context, script string, keys []string, args ...interface{}) *Cmd
+	EvalSha(ctx context.Context, sha1 string, keys []string, args ...interface{}) *Cmd
+	EvalRO(ctx context.Context, script string, keys []string, args ...interface{}) *Cmd
+	EvalShaRO(ctx context.Context, sha1 string, keys []string, args ...interface{}) *Cmd
+	ScriptExists(ctx context.Context, hashes ...string) *BoolSliceCmd
+	ScriptLoad(ctx context.Context, script string) *StringCmd
+}
+
+var (
+	_ Scripter = (*Client)(nil)
+	_ Scripter = (*Ring)(nil)
+	_ Scripter = (*ClusterClient)(nil)
+)
+
+type Script struct {
+	src, hash string
+}
+
+func NewScript(src string) *Script {
+	h := sha1.New()
+	_, _ = io.WriteString(h, src)
+	return &Script{
+		src:  src,
+		hash: hex.EncodeToString(h.Sum(nil)),
+	}
+}
+
+func (s *Script) Hash() string {
+	return s.hash
+}
+
+func (s *Script) Load(ctx context.Context, c Scripter) *StringCmd {
+	return c.ScriptLoad(ctx, s.src)
+}
+
+func (s *Script) Exists(ctx context.Context, c Scripter) *BoolSliceCmd {
+	return c.ScriptExists(ctx, s.hash)
+}
+
+func (s *Script) Eval(ctx context.Context, c Scripter, keys []string, args ...interface{}) *Cmd {
+	return c.Eval(ctx, s.src, keys, args...)
+}
+
+func (s *Script) EvalRO(ctx context.Context, c Scripter, keys []string, args ...interface{}) *Cmd {
+	return c.EvalRO(ctx, s.src, keys, args...)
+}
+
+func (s *Script) EvalSha(ctx context.Context, c Scripter, keys []string, args ...interface{}) *Cmd {
+	return c.EvalSha(ctx, s.hash, keys, args...)
+}
+
+func (s *Script) EvalShaRO(ctx context.Context, c Scripter, keys []string, args ...interface{}) *Cmd {
+	return c.EvalShaRO(ctx, s.hash, keys, args...)
+}
+
+// Run optimistically uses EVALSHA to run the script. If script does not exist
+// it is retried using EVAL.
+func (s *Script) Run(ctx context.Context, c Scripter, keys []string, args ...interface{}) *Cmd {
+	r := s.EvalSha(ctx, c, keys, args...)
+	if HasErrorPrefix(r.Err(), "NOSCRIPT") {
+		return s.Eval(ctx, c, keys, args...)
+	}
+	return r
+}
+
+// RunRO optimistically uses EVALSHA_RO to run the script. If script does not exist
+// it is retried using EVAL_RO.
+func (s *Script) RunRO(ctx context.Context, c Scripter, keys []string, args ...interface{}) *Cmd {
+	r := s.EvalShaRO(ctx, c, keys, args...)
+	if HasErrorPrefix(r.Err(), "NOSCRIPT") {
+		return s.EvalRO(ctx, c, keys, args...)
+	}
+	return r
+}

vendor/github.com/redis/go-redis/v9/sentinel.go

@@ -0,0 +1,820 @@
+package redis
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"net"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/redis/go-redis/v9/internal"
+	"github.com/redis/go-redis/v9/internal/pool"
+	"github.com/redis/go-redis/v9/internal/rand"
+)
+
+//------------------------------------------------------------------------------
+
+// FailoverOptions are used to configure a failover client and should
+// be passed to NewFailoverClient.
+type FailoverOptions struct {
+	// The master name.
+	MasterName string
+	// A seed list of host:port addresses of sentinel nodes.
+	SentinelAddrs []string
+
+	// ClientName will execute the `CLIENT SETNAME ClientName` command for each conn.
+	ClientName string
+
+	// If specified with SentinelPassword, enables ACL-based authentication (via
+	// AUTH <user> <pass>).
+	SentinelUsername string
+	// Sentinel password from "requirepass <password>" (if enabled) in Sentinel
+	// configuration, or, if SentinelUsername is also supplied, used for ACL-based
+	// authentication.
+	SentinelPassword string
+
+	// Allows routing read-only commands to the closest master or replica node.
+	// This option only works with NewFailoverClusterClient.
+	RouteByLatency bool
+	// Allows routing read-only commands to the random master or replica node.
+	// This option only works with NewFailoverClusterClient.
+	RouteRandomly bool
+
+	// Route all commands to replica read-only nodes.
+	ReplicaOnly bool
+
+	// Use replicas disconnected with master when cannot get connected replicas
+	// Now, this option only works in RandomReplicaAddr function.
+	UseDisconnectedReplicas bool
+
+	// Following options are copied from Options struct.
+
+	Dialer    func(ctx context.Context, network, addr string) (net.Conn, error)
+	OnConnect func(ctx context.Context, cn *Conn) error
+
+	Protocol int
+	Username string
+	Password string
+	DB       int
+
+	MaxRetries      int
+	MinRetryBackoff time.Duration
+	MaxRetryBackoff time.Duration
+
+	DialTimeout           time.Duration
+	ReadTimeout           time.Duration
+	WriteTimeout          time.Duration
+	ContextTimeoutEnabled bool
+
+	PoolFIFO bool
+
+	PoolSize        int
+	PoolTimeout     time.Duration
+	MinIdleConns    int
+	MaxIdleConns    int
+	ConnMaxIdleTime time.Duration
+	ConnMaxLifetime time.Duration
+
+	TLSConfig *tls.Config
+}
+
+func (opt *FailoverOptions) clientOptions() *Options {
+	return &Options{
+		Addr:       "FailoverClient",
+		ClientName: opt.ClientName,
+
+		Dialer:    opt.Dialer,
+		OnConnect: opt.OnConnect,
+
+		DB:       opt.DB,
+		Protocol: opt.Protocol,
+		Username: opt.Username,
+		Password: opt.Password,
+
+		MaxRetries:      opt.MaxRetries,
+		MinRetryBackoff: opt.MinRetryBackoff,
+		MaxRetryBackoff: opt.MaxRetryBackoff,
+
+		DialTimeout:           opt.DialTimeout,
+		ReadTimeout:           opt.ReadTimeout,
+		WriteTimeout:          opt.WriteTimeout,
+		ContextTimeoutEnabled: opt.ContextTimeoutEnabled,
+
+		PoolFIFO:        opt.PoolFIFO,
+		PoolSize:        opt.PoolSize,
+		PoolTimeout:     opt.PoolTimeout,
+		MinIdleConns:    opt.MinIdleConns,
+		MaxIdleConns:    opt.MaxIdleConns,
+		ConnMaxIdleTime: opt.ConnMaxIdleTime,
+		ConnMaxLifetime: opt.ConnMaxLifetime,
+
+		TLSConfig: opt.TLSConfig,
+	}
+}
+
+func (opt *FailoverOptions) sentinelOptions(addr string) *Options {
+	return &Options{
+		Addr:       addr,
+		ClientName: opt.ClientName,
+
+		Dialer:    opt.Dialer,
+		OnConnect: opt.OnConnect,
+
+		DB:       0,
+		Username: opt.SentinelUsername,
+		Password: opt.SentinelPassword,
+
+		MaxRetries:      opt.MaxRetries,
+		MinRetryBackoff: opt.MinRetryBackoff,
+		MaxRetryBackoff: opt.MaxRetryBackoff,
+
+		DialTimeout:  opt.DialTimeout,
+		ReadTimeout:  opt.ReadTimeout,
+		WriteTimeout: opt.WriteTimeout,
+
+		PoolFIFO:        opt.PoolFIFO,
+		PoolSize:        opt.PoolSize,
+		PoolTimeout:     opt.PoolTimeout,
+		MinIdleConns:    opt.MinIdleConns,
+		MaxIdleConns:    opt.MaxIdleConns,
+		ConnMaxIdleTime: opt.ConnMaxIdleTime,
+		ConnMaxLifetime: opt.ConnMaxLifetime,
+
+		TLSConfig: opt.TLSConfig,
+	}
+}
+
+func (opt *FailoverOptions) clusterOptions() *ClusterOptions {
+	return &ClusterOptions{
+		ClientName: opt.ClientName,
+
+		Dialer:    opt.Dialer,
+		OnConnect: opt.OnConnect,
+
+		Protocol: opt.Protocol,
+		Username: opt.Username,
+		Password: opt.Password,
+
+		MaxRedirects: opt.MaxRetries,
+
+		RouteByLatency: opt.RouteByLatency,
+		RouteRandomly:  opt.RouteRandomly,
+
+		MinRetryBackoff: opt.MinRetryBackoff,
+		MaxRetryBackoff: opt.MaxRetryBackoff,
+
+		DialTimeout:  opt.DialTimeout,
+		ReadTimeout:  opt.ReadTimeout,
+		WriteTimeout: opt.WriteTimeout,
+
+		PoolFIFO:        opt.PoolFIFO,
+		PoolSize:        opt.PoolSize,
+		PoolTimeout:     opt.PoolTimeout,
+		MinIdleConns:    opt.MinIdleConns,
+		MaxIdleConns:    opt.MaxIdleConns,
+		ConnMaxIdleTime: opt.ConnMaxIdleTime,
+		ConnMaxLifetime: opt.ConnMaxLifetime,
+
+		TLSConfig: opt.TLSConfig,
+	}
+}
+
+// NewFailoverClient returns a Redis client that uses Redis Sentinel
+// for automatic failover. It's safe for concurrent use by multiple
+// goroutines.
+func NewFailoverClient(failoverOpt *FailoverOptions) *Client {
+	if failoverOpt.RouteByLatency {
+		panic("to route commands by latency, use NewFailoverClusterClient")
+	}
+	if failoverOpt.RouteRandomly {
+		panic("to route commands randomly, use NewFailoverClusterClient")
+	}
+
+	sentinelAddrs := make([]string, len(failoverOpt.SentinelAddrs))
+	copy(sentinelAddrs, failoverOpt.SentinelAddrs)
+
+	rand.Shuffle(len(sentinelAddrs), func(i, j int) {
+		sentinelAddrs[i], sentinelAddrs[j] = sentinelAddrs[j], sentinelAddrs[i]
+	})
+
+	failover := &sentinelFailover{
+		opt:           failoverOpt,
+		sentinelAddrs: sentinelAddrs,
+	}
+
+	opt := failoverOpt.clientOptions()
+	opt.Dialer = masterReplicaDialer(failover)
+	opt.init()
+
+	var connPool *pool.ConnPool
+
+	rdb := &Client{
+		baseClient: &baseClient{
+			opt: opt,
+		},
+	}
+	rdb.init()
+
+	connPool = newConnPool(opt, rdb.dialHook)
+	rdb.connPool = connPool
+	rdb.onClose = failover.Close
+
+	failover.mu.Lock()
+	failover.onFailover = func(ctx context.Context, addr string) {
+		_ = connPool.Filter(func(cn *pool.Conn) bool {
+			return cn.RemoteAddr().String() != addr
+		})
+	}
+	failover.mu.Unlock()
+
+	return rdb
+}
+
+func masterReplicaDialer(
+	failover *sentinelFailover,
+) func(ctx context.Context, network, addr string) (net.Conn, error) {
+	return func(ctx context.Context, network, _ string) (net.Conn, error) {
+		var addr string
+		var err error
+
+		if failover.opt.ReplicaOnly {
+			addr, err = failover.RandomReplicaAddr(ctx)
+		} else {
+			addr, err = failover.MasterAddr(ctx)
+			if err == nil {
+				failover.trySwitchMaster(ctx, addr)
+			}
+		}
+		if err != nil {
+			return nil, err
+		}
+		if failover.opt.Dialer != nil {
+			return failover.opt.Dialer(ctx, network, addr)
+		}
+
+		netDialer := &net.Dialer{
+			Timeout:   failover.opt.DialTimeout,
+			KeepAlive: 5 * time.Minute,
+		}
+		if failover.opt.TLSConfig == nil {
+			return netDialer.DialContext(ctx, network, addr)
+		}
+		return tls.DialWithDialer(netDialer, network, addr, failover.opt.TLSConfig)
+	}
+}
+
+//------------------------------------------------------------------------------
+
+// SentinelClient is a client for a Redis Sentinel.
+type SentinelClient struct {
+	*baseClient
+	hooksMixin
+}
+
+func NewSentinelClient(opt *Options) *SentinelClient {
+	opt.init()
+	c := &SentinelClient{
+		baseClient: &baseClient{
+			opt: opt,
+		},
+	}
+
+	c.initHooks(hooks{
+		dial:    c.baseClient.dial,
+		process: c.baseClient.process,
+	})
+	c.connPool = newConnPool(opt, c.dialHook)
+
+	return c
+}
+
+func (c *SentinelClient) Process(ctx context.Context, cmd Cmder) error {
+	err := c.processHook(ctx, cmd)
+	cmd.SetErr(err)
+	return err
+}
+
+func (c *SentinelClient) pubSub() *PubSub {
+	pubsub := &PubSub{
+		opt: c.opt,
+
+		newConn: func(ctx context.Context, channels []string) (*pool.Conn, error) {
+			return c.newConn(ctx)
+		},
+		closeConn: c.connPool.CloseConn,
+	}
+	pubsub.init()
+	return pubsub
+}
+
+// Ping is used to test if a connection is still alive, or to
+// measure latency.
+func (c *SentinelClient) Ping(ctx context.Context) *StringCmd {
+	cmd := NewStringCmd(ctx, "ping")
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Subscribe subscribes the client to the specified channels.
+// Channels can be omitted to create empty subscription.
+func (c *SentinelClient) Subscribe(ctx context.Context, channels ...string) *PubSub {
+	pubsub := c.pubSub()
+	if len(channels) > 0 {
+		_ = pubsub.Subscribe(ctx, channels...)
+	}
+	return pubsub
+}
+
+// PSubscribe subscribes the client to the given patterns.
+// Patterns can be omitted to create empty subscription.
+func (c *SentinelClient) PSubscribe(ctx context.Context, channels ...string) *PubSub {
+	pubsub := c.pubSub()
+	if len(channels) > 0 {
+		_ = pubsub.PSubscribe(ctx, channels...)
+	}
+	return pubsub
+}
+
+func (c *SentinelClient) GetMasterAddrByName(ctx context.Context, name string) *StringSliceCmd {
+	cmd := NewStringSliceCmd(ctx, "sentinel", "get-master-addr-by-name", name)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+func (c *SentinelClient) Sentinels(ctx context.Context, name string) *MapStringStringSliceCmd {
+	cmd := NewMapStringStringSliceCmd(ctx, "sentinel", "sentinels", name)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Failover forces a failover as if the master was not reachable, and without
+// asking for agreement to other Sentinels.
+func (c *SentinelClient) Failover(ctx context.Context, name string) *StatusCmd {
+	cmd := NewStatusCmd(ctx, "sentinel", "failover", name)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Reset resets all the masters with matching name. The pattern argument is a
+// glob-style pattern. The reset process clears any previous state in a master
+// (including a failover in progress), and removes every replica and sentinel
+// already discovered and associated with the master.
+func (c *SentinelClient) Reset(ctx context.Context, pattern string) *IntCmd {
+	cmd := NewIntCmd(ctx, "sentinel", "reset", pattern)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// FlushConfig forces Sentinel to rewrite its configuration on disk, including
+// the current Sentinel state.
+func (c *SentinelClient) FlushConfig(ctx context.Context) *StatusCmd {
+	cmd := NewStatusCmd(ctx, "sentinel", "flushconfig")
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Master shows the state and info of the specified master.
+func (c *SentinelClient) Master(ctx context.Context, name string) *MapStringStringCmd {
+	cmd := NewMapStringStringCmd(ctx, "sentinel", "master", name)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Masters shows a list of monitored masters and their state.
+func (c *SentinelClient) Masters(ctx context.Context) *SliceCmd {
+	cmd := NewSliceCmd(ctx, "sentinel", "masters")
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Replicas shows a list of replicas for the specified master and their state.
+func (c *SentinelClient) Replicas(ctx context.Context, name string) *MapStringStringSliceCmd {
+	cmd := NewMapStringStringSliceCmd(ctx, "sentinel", "replicas", name)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// CkQuorum checks if the current Sentinel configuration is able to reach the
+// quorum needed to failover a master, and the majority needed to authorize the
+// failover. This command should be used in monitoring systems to check if a
+// Sentinel deployment is ok.
+func (c *SentinelClient) CkQuorum(ctx context.Context, name string) *StringCmd {
+	cmd := NewStringCmd(ctx, "sentinel", "ckquorum", name)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Monitor tells the Sentinel to start monitoring a new master with the specified
+// name, ip, port, and quorum.
+func (c *SentinelClient) Monitor(ctx context.Context, name, ip, port, quorum string) *StringCmd {
+	cmd := NewStringCmd(ctx, "sentinel", "monitor", name, ip, port, quorum)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Set is used in order to change configuration parameters of a specific master.
+func (c *SentinelClient) Set(ctx context.Context, name, option, value string) *StringCmd {
+	cmd := NewStringCmd(ctx, "sentinel", "set", name, option, value)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Remove is used in order to remove the specified master: the master will no
+// longer be monitored, and will totally be removed from the internal state of
+// the Sentinel.
+func (c *SentinelClient) Remove(ctx context.Context, name string) *StringCmd {
+	cmd := NewStringCmd(ctx, "sentinel", "remove", name)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+//------------------------------------------------------------------------------
+
+type sentinelFailover struct {
+	opt *FailoverOptions
+
+	sentinelAddrs []string
+
+	onFailover func(ctx context.Context, addr string)
+	onUpdate   func(ctx context.Context)
+
+	mu          sync.RWMutex
+	_masterAddr string
+	sentinel    *SentinelClient
+	pubsub      *PubSub
+}
+
+func (c *sentinelFailover) Close() error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	if c.sentinel != nil {
+		return c.closeSentinel()
+	}
+	return nil
+}
+
+func (c *sentinelFailover) closeSentinel() error {
+	firstErr := c.pubsub.Close()
+	c.pubsub = nil
+
+	err := c.sentinel.Close()
+	if err != nil && firstErr == nil {
+		firstErr = err
+	}
+	c.sentinel = nil
+
+	return firstErr
+}
+
+func (c *sentinelFailover) RandomReplicaAddr(ctx context.Context) (string, error) {
+	if c.opt == nil {
+		return "", errors.New("opt is nil")
+	}
+
+	addresses, err := c.replicaAddrs(ctx, false)
+	if err != nil {
+		return "", err
+	}
+
+	if len(addresses) == 0 && c.opt.UseDisconnectedReplicas {
+		addresses, err = c.replicaAddrs(ctx, true)
+		if err != nil {
+			return "", err
+		}
+	}
+
+	if len(addresses) == 0 {
+		return c.MasterAddr(ctx)
+	}
+	return addresses[rand.Intn(len(addresses))], nil
+}
+
+func (c *sentinelFailover) MasterAddr(ctx context.Context) (string, error) {
+	c.mu.RLock()
+	sentinel := c.sentinel
+	c.mu.RUnlock()
+
+	if sentinel != nil {
+		addr, err := c.getMasterAddr(ctx, sentinel)
+		if err != nil {
+			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
+				return "", err
+			}
+			// Continue on other errors
+			internal.Logger.Printf(ctx, "sentinel: GetMasterAddrByName name=%q failed: %s",
+				c.opt.MasterName, err)
+		} else {
+			return addr, nil
+		}
+	}
+
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if c.sentinel != nil {
+		addr, err := c.getMasterAddr(ctx, c.sentinel)
+		if err != nil {
+			_ = c.closeSentinel()
+			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
+				return "", err
+			}
+			// Continue on other errors
+			internal.Logger.Printf(ctx, "sentinel: GetMasterAddrByName name=%q failed: %s",
+				c.opt.MasterName, err)
+		} else {
+			return addr, nil
+		}
+	}
+
+	for i, sentinelAddr := range c.sentinelAddrs {
+		sentinel := NewSentinelClient(c.opt.sentinelOptions(sentinelAddr))
+
+		masterAddr, err := sentinel.GetMasterAddrByName(ctx, c.opt.MasterName).Result()
+		if err != nil {
+			_ = sentinel.Close()
+			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
+				return "", err
+			}
+			internal.Logger.Printf(ctx, "sentinel: GetMasterAddrByName master=%q failed: %s",
+				c.opt.MasterName, err)
+			continue
+		}
+
+		// Push working sentinel to the top.
+		c.sentinelAddrs[0], c.sentinelAddrs[i] = c.sentinelAddrs[i], c.sentinelAddrs[0]
+		c.setSentinel(ctx, sentinel)
+
+		addr := net.JoinHostPort(masterAddr[0], masterAddr[1])
+		return addr, nil
+	}
+
+	return "", errors.New("redis: all sentinels specified in configuration are unreachable")
+}
+
+func (c *sentinelFailover) replicaAddrs(ctx context.Context, useDisconnected bool) ([]string, error) {
+	c.mu.RLock()
+	sentinel := c.sentinel
+	c.mu.RUnlock()
+
+	if sentinel != nil {
+		addrs, err := c.getReplicaAddrs(ctx, sentinel)
+		if err != nil {
+			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
+				return nil, err
+			}
+			// Continue on other errors
+			internal.Logger.Printf(ctx, "sentinel: Replicas name=%q failed: %s",
+				c.opt.MasterName, err)
+		} else if len(addrs) > 0 {
+			return addrs, nil
+		}
+	}
+
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if c.sentinel != nil {
+		addrs, err := c.getReplicaAddrs(ctx, c.sentinel)
+		if err != nil {
+			_ = c.closeSentinel()
+			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
+				return nil, err
+			}
+			// Continue on other errors
+			internal.Logger.Printf(ctx, "sentinel: Replicas name=%q failed: %s",
+				c.opt.MasterName, err)
+		} else if len(addrs) > 0 {
+			return addrs, nil
+		} else {
+			// No error and no replicas.
+			_ = c.closeSentinel()
+		}
+	}
+
+	var sentinelReachable bool
+
+	for i, sentinelAddr := range c.sentinelAddrs {
+		sentinel := NewSentinelClient(c.opt.sentinelOptions(sentinelAddr))
+
+		replicas, err := sentinel.Replicas(ctx, c.opt.MasterName).Result()
+		if err != nil {
+			_ = sentinel.Close()
+			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
+				return nil, err
+			}
+			internal.Logger.Printf(ctx, "sentinel: Replicas master=%q failed: %s",
+				c.opt.MasterName, err)
+			continue
+		}
+		sentinelReachable = true
+		addrs := parseReplicaAddrs(replicas, useDisconnected)
+		if len(addrs) == 0 {
+			continue
+		}
+		// Push working sentinel to the top.
+		c.sentinelAddrs[0], c.sentinelAddrs[i] = c.sentinelAddrs[i], c.sentinelAddrs[0]
+		c.setSentinel(ctx, sentinel)
+
+		return addrs, nil
+	}
+
+	if sentinelReachable {
+		return []string{}, nil
+	}
+	return []string{}, errors.New("redis: all sentinels specified in configuration are unreachable")
+}
+
+func (c *sentinelFailover) getMasterAddr(ctx context.Context, sentinel *SentinelClient) (string, error) {
+	addr, err := sentinel.GetMasterAddrByName(ctx, c.opt.MasterName).Result()
+	if err != nil {
+		return "", err
+	}
+	return net.JoinHostPort(addr[0], addr[1]), nil
+}
+
+func (c *sentinelFailover) getReplicaAddrs(ctx context.Context, sentinel *SentinelClient) ([]string, error) {
+	addrs, err := sentinel.Replicas(ctx, c.opt.MasterName).Result()
+	if err != nil {
+		internal.Logger.Printf(ctx, "sentinel: Replicas name=%q failed: %s",
+			c.opt.MasterName, err)
+		return nil, err
+	}
+	return parseReplicaAddrs(addrs, false), nil
+}
+
+func parseReplicaAddrs(addrs []map[string]string, keepDisconnected bool) []string {
+	nodes := make([]string, 0, len(addrs))
+	for _, node := range addrs {
+		isDown := false
+		if flags, ok := node["flags"]; ok {
+			for _, flag := range strings.Split(flags, ",") {
+				switch flag {
+				case "s_down", "o_down":
+					isDown = true
+				case "disconnected":
+					if !keepDisconnected {
+						isDown = true
+					}
+				}
+			}
+		}
+		if !isDown && node["ip"] != "" && node["port"] != "" {
+			nodes = append(nodes, net.JoinHostPort(node["ip"], node["port"]))
+		}
+	}
+
+	return nodes
+}
+
+func (c *sentinelFailover) trySwitchMaster(ctx context.Context, addr string) {
+	c.mu.RLock()
+	currentAddr := c._masterAddr //nolint:ifshort
+	c.mu.RUnlock()
+
+	if addr == currentAddr {
+		return
+	}
+
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if addr == c._masterAddr {
+		return
+	}
+	c._masterAddr = addr
+
+	internal.Logger.Printf(ctx, "sentinel: new master=%q addr=%q",
+		c.opt.MasterName, addr)
+	if c.onFailover != nil {
+		c.onFailover(ctx, addr)
+	}
+}
+
+func (c *sentinelFailover) setSentinel(ctx context.Context, sentinel *SentinelClient) {
+	if c.sentinel != nil {
+		panic("not reached")
+	}
+	c.sentinel = sentinel
+	c.discoverSentinels(ctx)
+
+	c.pubsub = sentinel.Subscribe(ctx, "+switch-master", "+replica-reconf-done")
+	go c.listen(c.pubsub)
+}
+
+func (c *sentinelFailover) discoverSentinels(ctx context.Context) {
+	sentinels, err := c.sentinel.Sentinels(ctx, c.opt.MasterName).Result()
+	if err != nil {
+		internal.Logger.Printf(ctx, "sentinel: Sentinels master=%q failed: %s", c.opt.MasterName, err)
+		return
+	}
+	for _, sentinel := range sentinels {
+		ip, ok := sentinel["ip"]
+		if !ok {
+			continue
+		}
+		port, ok := sentinel["port"]
+		if !ok {
+			continue
+		}
+		if ip != "" && port != "" {
+			sentinelAddr := net.JoinHostPort(ip, port)
+			if !contains(c.sentinelAddrs, sentinelAddr) {
+				internal.Logger.Printf(ctx, "sentinel: discovered new sentinel=%q for master=%q",
+					sentinelAddr, c.opt.MasterName)
+				c.sentinelAddrs = append(c.sentinelAddrs, sentinelAddr)
+			}
+		}
+	}
+}
+
+func (c *sentinelFailover) listen(pubsub *PubSub) {
+	ctx := context.TODO()
+
+	if c.onUpdate != nil {
+		c.onUpdate(ctx)
+	}
+
+	ch := pubsub.Channel()
+	for msg := range ch {
+		if msg.Channel == "+switch-master" {
+			parts := strings.Split(msg.Payload, " ")
+			if parts[0] != c.opt.MasterName {
+				internal.Logger.Printf(pubsub.getContext(), "sentinel: ignore addr for master=%q", parts[0])
+				continue
+			}
+			addr := net.JoinHostPort(parts[3], parts[4])
+			c.trySwitchMaster(pubsub.getContext(), addr)
+		}
+
+		if c.onUpdate != nil {
+			c.onUpdate(ctx)
+		}
+	}
+}
+
+func contains(slice []string, str string) bool {
+	for _, s := range slice {
+		if s == str {
+			return true
+		}
+	}
+	return false
+}
+
+//------------------------------------------------------------------------------
+
+// NewFailoverClusterClient returns a client that supports routing read-only commands
+// to a replica node.
+func NewFailoverClusterClient(failoverOpt *FailoverOptions) *ClusterClient {
+	sentinelAddrs := make([]string, len(failoverOpt.SentinelAddrs))
+	copy(sentinelAddrs, failoverOpt.SentinelAddrs)
+
+	failover := &sentinelFailover{
+		opt:           failoverOpt,
+		sentinelAddrs: sentinelAddrs,
+	}
+
+	opt := failoverOpt.clusterOptions()
+	opt.ClusterSlots = func(ctx context.Context) ([]ClusterSlot, error) {
+		masterAddr, err := failover.MasterAddr(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		nodes := []ClusterNode{{
+			Addr: masterAddr,
+		}}
+
+		replicaAddrs, err := failover.replicaAddrs(ctx, false)
+		if err != nil {
+			return nil, err
+		}
+
+		for _, replicaAddr := range replicaAddrs {
+			nodes = append(nodes, ClusterNode{
+				Addr: replicaAddr,
+			})
+		}
+
+		slots := []ClusterSlot{
+			{
+				Start: 0,
+				End:   16383,
+				Nodes: nodes,
+			},
+		}
+		return slots, nil
+	}
+
+	c := NewClusterClient(opt)
+
+	failover.mu.Lock()
+	failover.onUpdate = func(ctx context.Context) {
+		c.ReloadState(ctx)
+	}
+	failover.mu.Unlock()
+
+	return c
+}

vendor/github.com/redis/go-redis/v9/tx.go

@@ -0,0 +1,151 @@
+package redis
+
+import (
+	"context"
+
+	"github.com/redis/go-redis/v9/internal/pool"
+	"github.com/redis/go-redis/v9/internal/proto"
+)
+
+// TxFailedErr transaction redis failed.
+const TxFailedErr = proto.RedisError("redis: transaction failed")
+
+// Tx implements Redis transactions as described in
+// http://redis.io/topics/transactions. It's NOT safe for concurrent use
+// by multiple goroutines, because Exec resets list of watched keys.
+//
+// If you don't need WATCH, use Pipeline instead.
+type Tx struct {
+	baseClient
+	cmdable
+	statefulCmdable
+	hooksMixin
+}
+
+func (c *Client) newTx() *Tx {
+	tx := Tx{
+		baseClient: baseClient{
+			opt:      c.opt,
+			connPool: pool.NewStickyConnPool(c.connPool),
+		},
+		hooksMixin: c.hooksMixin.clone(),
+	}
+	tx.init()
+	return &tx
+}
+
+func (c *Tx) init() {
+	c.cmdable = c.Process
+	c.statefulCmdable = c.Process
+
+	c.initHooks(hooks{
+		dial:       c.baseClient.dial,
+		process:    c.baseClient.process,
+		pipeline:   c.baseClient.processPipeline,
+		txPipeline: c.baseClient.processTxPipeline,
+	})
+}
+
+func (c *Tx) Process(ctx context.Context, cmd Cmder) error {
+	err := c.processHook(ctx, cmd)
+	cmd.SetErr(err)
+	return err
+}
+
+// Watch prepares a transaction and marks the keys to be watched
+// for conditional execution if there are any keys.
+//
+// The transaction is automatically closed when fn exits.
+func (c *Client) Watch(ctx context.Context, fn func(*Tx) error, keys ...string) error {
+	tx := c.newTx()
+	defer tx.Close(ctx)
+	if len(keys) > 0 {
+		if err := tx.Watch(ctx, keys...).Err(); err != nil {
+			return err
+		}
+	}
+	return fn(tx)
+}
+
+// Close closes the transaction, releasing any open resources.
+func (c *Tx) Close(ctx context.Context) error {
+	_ = c.Unwatch(ctx).Err()
+	return c.baseClient.Close()
+}
+
+// Watch marks the keys to be watched for conditional execution
+// of a transaction.
+func (c *Tx) Watch(ctx context.Context, keys ...string) *StatusCmd {
+	args := make([]interface{}, 1+len(keys))
+	args[0] = "watch"
+	for i, key := range keys {
+		args[1+i] = key
+	}
+	cmd := NewStatusCmd(ctx, args...)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Unwatch flushes all the previously watched keys for a transaction.
+func (c *Tx) Unwatch(ctx context.Context, keys ...string) *StatusCmd {
+	args := make([]interface{}, 1+len(keys))
+	args[0] = "unwatch"
+	for i, key := range keys {
+		args[1+i] = key
+	}
+	cmd := NewStatusCmd(ctx, args...)
+	_ = c.Process(ctx, cmd)
+	return cmd
+}
+
+// Pipeline creates a pipeline. Usually it is more convenient to use Pipelined.
+func (c *Tx) Pipeline() Pipeliner {
+	pipe := Pipeline{
+		exec: func(ctx context.Context, cmds []Cmder) error {
+			return c.processPipelineHook(ctx, cmds)
+		},
+	}
+	pipe.init()
+	return &pipe
+}
+
+// Pipelined executes commands queued in the fn outside of the transaction.
+// Use TxPipelined if you need transactional behavior.
+func (c *Tx) Pipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipeline().Pipelined(ctx, fn)
+}
+
+// TxPipelined executes commands queued in the fn in the transaction.
+//
+// When using WATCH, EXEC will execute commands only if the watched keys
+// were not modified, allowing for a check-and-set mechanism.
+//
+// Exec always returns list of commands. If transaction fails
+// TxFailedErr is returned. Otherwise Exec returns an error of the first
+// failed command or nil.
+func (c *Tx) TxPipelined(ctx context.Context, fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.TxPipeline().Pipelined(ctx, fn)
+}
+
+// TxPipeline creates a pipeline. Usually it is more convenient to use TxPipelined.
+func (c *Tx) TxPipeline() Pipeliner {
+	pipe := Pipeline{
+		exec: func(ctx context.Context, cmds []Cmder) error {
+			cmds = wrapMultiExec(ctx, cmds)
+			return c.processTxPipelineHook(ctx, cmds)
+		},
+	}
+	pipe.init()
+	return &pipe
+}
+
+func wrapMultiExec(ctx context.Context, cmds []Cmder) []Cmder {
+	if len(cmds) == 0 {
+		panic("not reached")
+	}
+	cmdsCopy := make([]Cmder, len(cmds)+2)
+	cmdsCopy[0] = NewStatusCmd(ctx, "multi")
+	copy(cmdsCopy[1:], cmds)
+	cmdsCopy[len(cmdsCopy)-1] = NewSliceCmd(ctx, "exec")
+	return cmdsCopy
+}

vendor/github.com/redis/go-redis/v9/universal.go

@@ -0,0 +1,231 @@
+package redis
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+	"time"
+)
+
+// UniversalOptions information is required by UniversalClient to establish
+// connections.
+type UniversalOptions struct {
+	// Either a single address or a seed list of host:port addresses
+	// of cluster/sentinel nodes.
+	Addrs []string
+
+	// ClientName will execute the `CLIENT SETNAME ClientName` command for each conn.
+	ClientName string
+
+	// Database to be selected after connecting to the server.
+	// Only single-node and failover clients.
+	DB int
+
+	// Common options.
+
+	Dialer    func(ctx context.Context, network, addr string) (net.Conn, error)
+	OnConnect func(ctx context.Context, cn *Conn) error
+
+	Protocol         int
+	Username         string
+	Password         string
+	SentinelUsername string
+	SentinelPassword string
+
+	MaxRetries      int
+	MinRetryBackoff time.Duration
+	MaxRetryBackoff time.Duration
+
+	DialTimeout           time.Duration
+	ReadTimeout           time.Duration
+	WriteTimeout          time.Duration
+	ContextTimeoutEnabled bool
+
+	// PoolFIFO uses FIFO mode for each node connection pool GET/PUT (default LIFO).
+	PoolFIFO bool
+
+	PoolSize        int
+	PoolTimeout     time.Duration
+	MinIdleConns    int
+	MaxIdleConns    int
+	ConnMaxIdleTime time.Duration
+	ConnMaxLifetime time.Duration
+
+	TLSConfig *tls.Config
+
+	// Only cluster clients.
+
+	MaxRedirects   int
+	ReadOnly       bool
+	RouteByLatency bool
+	RouteRandomly  bool
+
+	// The sentinel master name.
+	// Only failover clients.
+
+	MasterName string
+}
+
+// Cluster returns cluster options created from the universal options.
+func (o *UniversalOptions) Cluster() *ClusterOptions {
+	if len(o.Addrs) == 0 {
+		o.Addrs = []string{"127.0.0.1:6379"}
+	}
+
+	return &ClusterOptions{
+		Addrs:      o.Addrs,
+		ClientName: o.ClientName,
+		Dialer:     o.Dialer,
+		OnConnect:  o.OnConnect,
+
+		Protocol: o.Protocol,
+		Username: o.Username,
+		Password: o.Password,
+
+		MaxRedirects:   o.MaxRedirects,
+		ReadOnly:       o.ReadOnly,
+		RouteByLatency: o.RouteByLatency,
+		RouteRandomly:  o.RouteRandomly,
+
+		MaxRetries:      o.MaxRetries,
+		MinRetryBackoff: o.MinRetryBackoff,
+		MaxRetryBackoff: o.MaxRetryBackoff,
+
+		DialTimeout:           o.DialTimeout,
+		ReadTimeout:           o.ReadTimeout,
+		WriteTimeout:          o.WriteTimeout,
+		ContextTimeoutEnabled: o.ContextTimeoutEnabled,
+
+		PoolFIFO: o.PoolFIFO,
+
+		PoolSize:        o.PoolSize,
+		PoolTimeout:     o.PoolTimeout,
+		MinIdleConns:    o.MinIdleConns,
+		MaxIdleConns:    o.MaxIdleConns,
+		ConnMaxIdleTime: o.ConnMaxIdleTime,
+		ConnMaxLifetime: o.ConnMaxLifetime,
+
+		TLSConfig: o.TLSConfig,
+	}
+}
+
+// Failover returns failover options created from the universal options.
+func (o *UniversalOptions) Failover() *FailoverOptions {
+	if len(o.Addrs) == 0 {
+		o.Addrs = []string{"127.0.0.1:26379"}
+	}
+
+	return &FailoverOptions{
+		SentinelAddrs: o.Addrs,
+		MasterName:    o.MasterName,
+		ClientName:    o.ClientName,
+
+		Dialer:    o.Dialer,
+		OnConnect: o.OnConnect,
+
+		DB:               o.DB,
+		Protocol:         o.Protocol,
+		Username:         o.Username,
+		Password:         o.Password,
+		SentinelUsername: o.SentinelUsername,
+		SentinelPassword: o.SentinelPassword,
+
+		MaxRetries:      o.MaxRetries,
+		MinRetryBackoff: o.MinRetryBackoff,
+		MaxRetryBackoff: o.MaxRetryBackoff,
+
+		DialTimeout:           o.DialTimeout,
+		ReadTimeout:           o.ReadTimeout,
+		WriteTimeout:          o.WriteTimeout,
+		ContextTimeoutEnabled: o.ContextTimeoutEnabled,
+
+		PoolFIFO:        o.PoolFIFO,
+		PoolSize:        o.PoolSize,
+		PoolTimeout:     o.PoolTimeout,
+		MinIdleConns:    o.MinIdleConns,
+		MaxIdleConns:    o.MaxIdleConns,
+		ConnMaxIdleTime: o.ConnMaxIdleTime,
+		ConnMaxLifetime: o.ConnMaxLifetime,
+
+		TLSConfig: o.TLSConfig,
+	}
+}
+
+// Simple returns basic options created from the universal options.
+func (o *UniversalOptions) Simple() *Options {
+	addr := "127.0.0.1:6379"
+	if len(o.Addrs) > 0 {
+		addr = o.Addrs[0]
+	}
+
+	return &Options{
+		Addr:       addr,
+		ClientName: o.ClientName,
+		Dialer:     o.Dialer,
+		OnConnect:  o.OnConnect,
+
+		DB:       o.DB,
+		Protocol: o.Protocol,
+		Username: o.Username,
+		Password: o.Password,
+
+		MaxRetries:      o.MaxRetries,
+		MinRetryBackoff: o.MinRetryBackoff,
+		MaxRetryBackoff: o.MaxRetryBackoff,
+
+		DialTimeout:           o.DialTimeout,
+		ReadTimeout:           o.ReadTimeout,
+		WriteTimeout:          o.WriteTimeout,
+		ContextTimeoutEnabled: o.ContextTimeoutEnabled,
+
+		PoolFIFO:        o.PoolFIFO,
+		PoolSize:        o.PoolSize,
+		PoolTimeout:     o.PoolTimeout,
+		MinIdleConns:    o.MinIdleConns,
+		MaxIdleConns:    o.MaxIdleConns,
+		ConnMaxIdleTime: o.ConnMaxIdleTime,
+		ConnMaxLifetime: o.ConnMaxLifetime,
+
+		TLSConfig: o.TLSConfig,
+	}
+}
+
+// --------------------------------------------------------------------
+
+// UniversalClient is an abstract client which - based on the provided options -
+// represents either a ClusterClient, a FailoverClient, or a single-node Client.
+// This can be useful for testing cluster-specific applications locally or having different
+// clients in different environments.
+type UniversalClient interface {
+	Cmdable
+	AddHook(Hook)
+	Watch(ctx context.Context, fn func(*Tx) error, keys ...string) error
+	Do(ctx context.Context, args ...interface{}) *Cmd
+	Process(ctx context.Context, cmd Cmder) error
+	Subscribe(ctx context.Context, channels ...string) *PubSub
+	PSubscribe(ctx context.Context, channels ...string) *PubSub
+	SSubscribe(ctx context.Context, channels ...string) *PubSub
+	Close() error
+	PoolStats() *PoolStats
+}
+
+var (
+	_ UniversalClient = (*Client)(nil)
+	_ UniversalClient = (*ClusterClient)(nil)
+	_ UniversalClient = (*Ring)(nil)
+)
+
+// NewUniversalClient returns a new multi client. The type of the returned client depends
+// on the following conditions:
+//
+// 1. If the MasterName option is specified, a sentinel-backed FailoverClient is returned.
+// 2. if the number of Addrs is two or more, a ClusterClient is returned.
+// 3. Otherwise, a single-node Client is returned.
+func NewUniversalClient(opts *UniversalOptions) UniversalClient {
+	if opts.MasterName != "" {
+		return NewFailoverClient(opts.Failover())
+	} else if len(opts.Addrs) > 1 {
+		return NewClusterClient(opts.Cluster())
+	}
+	return NewClient(opts.Simple())
+}

vendor/github.com/redis/go-redis/v9/version.go

@@ -0,0 +1,6 @@
+package redis
+
+// Version is the current release version.
+func Version() string {
+	return "9.1.0"
+}