[#645] blobstor: Add Badger store

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-node/config.go

@@ -21,6 +21,7 @@ import (
 	contractsconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/contracts"
 	engineconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine"
 	shardconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard"
+	badgerstoreconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/blobstor/badgerstore"
 	blobovniczaconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/blobstor/blobovnicza"
 	fstreeconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard/blobstor/fstree"
 	loggerconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/logger"
@@ -34,6 +35,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
 	netmapCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/netmap"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/badgerstore"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/engine"
@@ -183,12 +185,20 @@ type subStorageCfg struct {
 	noSync bool
 
 	// blobovnicza-specific
-	size               uint64
-	width              uint64
-	leafWidth          uint64
-	openedCacheSize    int
-	initWorkerCount    int
-	initInAdvance      bool
+	size            uint64
+	width           uint64
+	leafWidth       uint64
+	openedCacheSize int
+	initWorkerCount int
+	initInAdvance   bool
+
+	// badgerstore-specific
+	indexCacheSize     int64
+	memTablesCount     int
+	compactorsCount    int
+	gcInterval         time.Duration
+	gcDiscardRatio     float64
+	valueLogFileSize   int64
 	rebuildDropTimeout time.Duration
 }
 
@@ -317,6 +327,14 @@ func (a *applicationConfiguration) setShardStorageConfig(newConfig *shardCfg, ol
 			sub := fstreeconfig.From((*config.Config)(storagesCfg[i]))
 			sCfg.depth = sub.Depth()
 			sCfg.noSync = sub.NoSync()
+		case badgerstore.Type:
+			sub := badgerstoreconfig.From((*config.Config)(storagesCfg[i]))
+			sCfg.indexCacheSize = sub.IndexCacheSize()
+			sCfg.memTablesCount = sub.MemTablesCount()
+			sCfg.compactorsCount = sub.CompactorsCount()
+			sCfg.gcInterval = sub.GCInterval()
+			sCfg.gcDiscardRatio = sub.GCDiscardRatio()
+			sCfg.valueLogFileSize = sub.ValueLogFileSize()
 		default:
 			return fmt.Errorf("invalid storage type: %s", storagesCfg[i].Type())
 		}
@@ -941,6 +959,23 @@ func (c *cfg) getSubstorageOpts(shCfg shardCfg) []blobstor.SubStorage {
 					return true
 				},
 			})
+		case badgerstore.Type:
+			badgerStoreOpts := []badgerstore.Option{
+				badgerstore.WithPath(sRead.path),
+				badgerstore.WithPermissions(sRead.perm),
+				badgerstore.WithCompactorsCount(sRead.compactorsCount),
+				badgerstore.WithGCDiscardRatio(sRead.gcDiscardRatio),
+				badgerstore.WithGCInterval(sRead.gcInterval),
+				badgerstore.WithIndexCacheSize(sRead.indexCacheSize),
+				badgerstore.WithMemTablesCount(sRead.memTablesCount),
+				badgerstore.WithValueLogSize(sRead.valueLogFileSize),
+			}
+			ss = append(ss, blobstor.SubStorage{
+				Storage: badgerstore.New(badgerStoreOpts...),
+				Policy: func(_ *objectSDK.Object, data []byte) bool {
+					return uint64(len(data)) < shCfg.smallSizeObjectLimit
+				},
+			})
 		default:
 			// should never happen, that has already
 			// been handled: when the config was read

cmd/frostfs-node/config/engine/shard/blobstor/badgerstore/config.go

@@ -0,0 +1,85 @@
+package badgerstore
+
+import (
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/badgerstore"
+)
+
+type Config config.Config
+
+const (
+	IndexCacheSizeDefault  = 256 << 20 // 256MB
+	MemTablesCountDefault  = 32
+	CompactorsCountDefault = 64
+	GCIntervalDefault      = 10 * time.Minute
+	GCDiscardRatioDefault  = 0.2
+	ValueLogSizeDefault    = 1 << 30 // 1GB
+)
+
+// From wraps config section into Config.
+func From(c *config.Config) *Config {
+	return (*Config)(c)
+}
+
+// Type returns the storage type.
+func (x *Config) Type() string {
+	return badgerstore.Type
+}
+
+// IndexCacheSize returns `index_cache_size` value or IndexCacheSizeDefault.
+func (x *Config) IndexCacheSize() int64 {
+	s := config.SizeInBytesSafe((*config.Config)(x), "index_cache_size")
+	if s > 0 {
+		return int64(s)
+	}
+
+	return IndexCacheSizeDefault
+}
+
+// MemTablesCount returns `mem_tables_count` value or MemTablesCountDefault.
+func (x *Config) MemTablesCount() int {
+	v := config.IntSafe((*config.Config)(x), "mem_tables_count")
+	if v > 0 {
+		return int(v)
+	}
+	return MemTablesCountDefault
+}
+
+// CompactorsCount returns `compactors_count` value or CompactorsCountDefault.
+func (x *Config) CompactorsCount() int {
+	v := config.IntSafe((*config.Config)(x), "compactors_count")
+	if v > 0 {
+		return int(v)
+	}
+	return CompactorsCountDefault
+}
+
+// GCInterval returns `gc_interval` value or GCIntervalDefault.
+func (x *Config) GCInterval() time.Duration {
+	v := config.DurationSafe((*config.Config)(x), "gc_interval")
+	if v > 0 {
+		return v
+	}
+	return GCIntervalDefault
+}
+
+// GCDiscardRatio returns `gc_discard_percent` value as ratio value (in range (0.0; 1.0)) or GCDiscardRatioDefault.
+func (x *Config) GCDiscardRatio() float64 {
+	v := config.Uint32Safe((*config.Config)(x), "gc_discard_percent")
+	if v > 0 && v < 100 {
+		return float64(v) / (float64(100))
+	}
+	return GCDiscardRatioDefault
+}
+
+// ValueLogFileSize returns `value_log_file_size` value or ValueLogSizeDefault.
+func (x *Config) ValueLogFileSize() int64 {
+	s := config.SizeInBytesSafe((*config.Config)(x), "value_log_file_size")
+	if s > 0 {
+		return int64(s)
+	}
+
+	return ValueLogSizeDefault
+}

cmd/frostfs-node/validate.go

@@ -9,6 +9,7 @@ import (
 	shardconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/engine/shard"
 	loggerconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/logger"
 	treeconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/tree"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/badgerstore"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
@@ -60,7 +61,7 @@ func validateConfig(c *config.Config) error {
 		}
 		for i := range blobstor {
 			switch blobstor[i].Type() {
-			case fstree.Type, blobovniczatree.Type:
+			case fstree.Type, blobovniczatree.Type, badgerstore.Type:
 			default:
 				return fmt.Errorf("unexpected storage type: %s (shard %d)", blobstor[i].Type(), shardNum)
 			}

pkg/local_object_storage/blobstor/badgerstore/config.go

@@ -0,0 +1,117 @@
+package badgerstore
+
+import (
+	"io/fs"
+	"math"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
+	"github.com/dgraph-io/badger/v4"
+	"github.com/dgraph-io/badger/v4/options"
+)
+
+type cfg struct {
+	permissions    fs.FileMode
+	compression    *compression.Config
+	db             badger.Options
+	gcTimeout      time.Duration
+	gcDiscardRatio float64
+}
+
+type Option func(*cfg)
+
+// defaultCfg creates default options to create Store.
+// Default Badger options:
+// BaseTableSize: 2MB
+// BaseLevelSize: 10MB
+// TableSizeMultiplier: 2
+// LevelSizeMultiplier: 10
+// MaxLevels: 7
+// NumLevelZeroTables: 5
+// ValueLogFileSize: 1GB
+//
+// Badger flushes MemTable directly to Level0.
+// So for Level0 MemTableSize is used as TableSize https://github.com/dgraph-io/badger/blob/v4.1.0/levels.go#L403.
+// There is no total size limit for Level0, only NumLevelZeroTables
+//
+// Badger uses Dynamic Level Sizes like RocksDB.
+// See https://github.com/facebook/rocksdb/blob/v3.11/include/rocksdb/options.h#L366 for explanation.
+func defaultCfg() *cfg {
+	opts := badger.DefaultOptions("/")
+	opts.BlockCacheSize = 0         // compression and encryption are disabled, so block cache should be disabled
+	opts.IndexCacheSize = 256 << 20 // 256MB, to not to keep all indicies in memory
+	opts.Compression = options.None // performed by cfg.compressor
+	opts.Logger = nil
+	opts.MetricsEnabled = false
+	opts.NumLevelZeroTablesStall = math.MaxInt // to not to stall because of Level0 slow compaction
+	opts.NumMemtables = 32                     // default memtable size is 64MB, so max memory consumption will be 2GB before stall
+	opts.NumCompactors = 64
+	opts.SyncWrites = true
+	opts.ValueLogMaxEntries = math.MaxUint32 // default vLog file size is 1GB, so size is more clear than entries count
+	opts.ValueThreshold = 0                  // to store all values in vLog
+	opts.LmaxCompaction = true
+
+	return &cfg{
+		permissions:    0o700,
+		db:             opts,
+		gcTimeout:      10 * time.Minute,
+		gcDiscardRatio: 0.2, // for 1GB vLog file GC will perform only if around 200MB could be free
+	}
+}
+
+// WithPath sets BadgerStore directory.
+func WithPath(dir string) Option {
+	return func(c *cfg) {
+		c.db.Dir = dir
+		c.db.ValueDir = dir
+	}
+}
+
+// WithPermissions sets persmission flags.
+func WithPermissions(p fs.FileMode) Option {
+	return func(c *cfg) {
+		c.permissions = p
+	}
+}
+
+// WithIndexCacheSize sets BadgerStore index cache size.
+func WithIndexCacheSize(sz int64) Option {
+	return func(c *cfg) {
+		c.db.IndexCacheSize = sz
+	}
+}
+
+// WithMemTablesCount sets maximum count of memtables.
+func WithMemTablesCount(count int) Option {
+	return func(c *cfg) {
+		c.db.NumMemtables = count
+	}
+}
+
+// WithCompactorsCount sets count of concurrent compactors.
+func WithCompactorsCount(count int) Option {
+	return func(c *cfg) {
+		c.db.NumCompactors = count
+	}
+}
+
+// WithGCInterval sets GC interval value.
+func WithGCInterval(d time.Duration) Option {
+	return func(c *cfg) {
+		c.gcTimeout = d
+	}
+}
+
+// WithGCDiscardRatio sets GC discard ratio.
+func WithGCDiscardRatio(r float64) Option {
+	return func(c *cfg) {
+		c.gcDiscardRatio = r
+	}
+}
+
+// WithValueLogSize sets max value log size.
+func WithValueLogSize(sz int64) Option {
+	return func(c *cfg) {
+		c.db.ValueLogFileSize = sz
+	}
+}

pkg/local_object_storage/blobstor/badgerstore/control.go

@@ -0,0 +1,93 @@
+package badgerstore
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
+	"github.com/dgraph-io/badger/v4"
+)
+
+var errStoreMustBeOpenedBeforeInit = errors.New("store must be opened before initialization")
+
+// Close implements common.Storage.
+func (s *Store) Close() error {
+	s.modeMtx.Lock()
+	defer s.modeMtx.Unlock()
+
+	if !s.opened {
+		return nil
+	}
+
+	if s.gcCancel != nil {
+		s.gcCancel()
+	}
+	s.wg.Wait()
+
+	if err := s.db.Close(); err != nil {
+		return err
+	}
+	s.opened = false
+	return nil
+}
+
+// Init implements common.Storage.
+func (s *Store) Init() error {
+	s.modeMtx.Lock()
+	defer s.modeMtx.Unlock()
+
+	if !s.opened {
+		return errStoreMustBeOpenedBeforeInit
+	}
+
+	s.startGC()
+
+	return nil
+}
+
+func (s *Store) startGC() {
+	ctx, cancel := context.WithCancel(context.Background())
+	s.gcCancel = cancel
+
+	t := time.NewTicker(s.cfg.gcTimeout)
+	s.wg.Add(1)
+
+	go func() {
+		defer s.wg.Done()
+
+		select {
+		case <-ctx.Done():
+			return
+		case <-t.C:
+			if err := s.db.RunValueLogGC(s.cfg.gcDiscardRatio); err == nil {
+				_ = s.db.RunValueLogGC(s.cfg.gcDiscardRatio) // see https://dgraph.io/docs/badger/get-started/#garbage-collection
+			}
+		}
+	}()
+}
+
+// Open implements common.Storage.
+func (s *Store) Open(readOnly bool) error {
+	s.modeMtx.Lock()
+	defer s.modeMtx.Unlock()
+
+	if s.opened {
+		return nil
+	}
+
+	err := util.MkdirAllX(s.cfg.db.Dir, s.cfg.permissions)
+	if err != nil {
+		return err
+	}
+	s.cfg.db.ReadOnly = readOnly
+	if s.db, err = badger.Open(s.cfg.db); err != nil {
+		return err
+	}
+	s.opened = true
+	return nil
+}
+
+func (s *Store) readOnly() bool {
+	return s.cfg.db.ReadOnly
+}

pkg/local_object_storage/blobstor/badgerstore/delete.go

@@ -0,0 +1,44 @@
+package badgerstore
+
+import (
+	"context"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"github.com/dgraph-io/badger/v4"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// Delete implements common.Storage.
+func (s *Store) Delete(ctx context.Context, prm common.DeletePrm) (common.DeleteRes, error) {
+	_, span := tracing.StartSpanFromContext(ctx, "BadgerStore.Delete",
+		trace.WithAttributes(
+			attribute.String("path", s.cfg.db.Dir),
+			attribute.String("address", prm.Address.EncodeToString()),
+		))
+	defer span.End()
+
+	if s.readOnly() {
+		return common.DeleteRes{}, common.ErrReadOnly
+	}
+
+	tx := s.db.NewTransaction(true)
+	defer tx.Discard()
+
+	_, err := tx.Get(key(prm.Address))
+	if err != nil {
+		if err == badger.ErrKeyNotFound {
+			return common.DeleteRes{}, logicerr.Wrap(new(apistatus.ObjectNotFound))
+		}
+		return common.DeleteRes{}, err
+	}
+
+	err = tx.Delete(key(prm.Address))
+	if err != nil {
+		return common.DeleteRes{}, err
+	}
+	return common.DeleteRes{}, tx.Commit()
+}

pkg/local_object_storage/blobstor/badgerstore/exists.go

@@ -0,0 +1,36 @@
+package badgerstore
+
+import (
+	"context"
+	"encoding/hex"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	"github.com/dgraph-io/badger/v4"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// Exists implements common.Storage.
+func (s *Store) Exists(ctx context.Context, prm common.ExistsPrm) (common.ExistsRes, error) {
+	_, span := tracing.StartSpanFromContext(ctx, "BadgerStore.Exists",
+		trace.WithAttributes(
+			attribute.String("path", s.cfg.db.Dir),
+			attribute.String("address", prm.Address.EncodeToString()),
+			attribute.String("storage_id", hex.EncodeToString(prm.StorageID)),
+		))
+	defer span.End()
+
+	tx := s.db.NewTransaction(false)
+	defer tx.Discard()
+
+	_, err := tx.Get(key(prm.Address))
+	if err != nil {
+		if err == badger.ErrKeyNotFound {
+			return common.ExistsRes{Exists: false}, nil
+		}
+		return common.ExistsRes{}, err
+	}
+
+	return common.ExistsRes{Exists: true}, nil
+}

pkg/local_object_storage/blobstor/badgerstore/generic_test.go

@@ -0,0 +1,39 @@
+package badgerstore
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/internal/blobstortest"
+)
+
+func TestGeneric(t *testing.T) {
+	const maxObjectSize = 1 << 16
+
+	helper := func(t *testing.T, dir string) common.Storage {
+		return New(WithPath(dir))
+	}
+
+	newStore := func(t *testing.T) common.Storage {
+		return helper(t, t.TempDir())
+	}
+
+	blobstortest.TestAll(t, newStore, 1024, maxObjectSize)
+
+	t.Run("info", func(t *testing.T) {
+		dir := t.TempDir()
+		blobstortest.TestInfo(t, func(t *testing.T) common.Storage {
+			return helper(t, dir)
+		}, Type, dir)
+	})
+}
+
+func TestControl(t *testing.T) {
+	const maxObjectSize = 2048
+
+	newStore := func(t *testing.T) common.Storage {
+		return New(WithPath(t.TempDir()))
+	}
+
+	blobstortest.TestControl(t, newStore, 1024, maxObjectSize)
+}

pkg/local_object_storage/blobstor/badgerstore/get.go

@@ -0,0 +1,107 @@
+package badgerstore
+
+import (
+	"context"
+	"encoding/hex"
+	"fmt"
+	"strconv"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/dgraph-io/badger/v4"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// Get implements common.Storage.
+func (s *Store) Get(ctx context.Context, prm common.GetPrm) (common.GetRes, error) {
+	_, span := tracing.StartSpanFromContext(ctx, "BadgerStore.Get",
+		trace.WithAttributes(
+			attribute.String("path", s.cfg.db.Dir),
+			attribute.String("address", prm.Address.EncodeToString()),
+			attribute.String("storage_id", hex.EncodeToString(prm.StorageID)),
+			attribute.Bool("raw", prm.Raw),
+		))
+	defer span.End()
+
+	data, err := s.getObjectData(prm.Address)
+	if err != nil {
+		return common.GetRes{}, err
+	}
+
+	data, err = s.cfg.compression.Decompress(data)
+	if err != nil {
+		return common.GetRes{}, fmt.Errorf("could not decompress object data: %w", err)
+	}
+
+	obj := objectSDK.New()
+	if err := obj.Unmarshal(data); err != nil {
+		return common.GetRes{}, fmt.Errorf("could not unmarshal the object: %w", err)
+	}
+
+	return common.GetRes{Object: obj, RawData: data}, nil
+}
+
+// GetRange implements common.Storage.
+func (s *Store) GetRange(ctx context.Context, prm common.GetRangePrm) (common.GetRangeRes, error) {
+	_, span := tracing.StartSpanFromContext(ctx, "BadgerStore.GetRange",
+		trace.WithAttributes(
+			attribute.String("path", s.cfg.db.Dir),
+			attribute.String("address", prm.Address.EncodeToString()),
+			attribute.String("storage_id", hex.EncodeToString(prm.StorageID)),
+			attribute.String("offset", strconv.FormatUint(prm.Range.GetOffset(), 10)),
+			attribute.String("length", strconv.FormatUint(prm.Range.GetLength(), 10)),
+		))
+	defer span.End()
+
+	data, err := s.getObjectData(prm.Address)
+	if err != nil {
+		return common.GetRangeRes{}, err
+	}
+
+	data, err = s.cfg.compression.Decompress(data)
+	if err != nil {
+		return common.GetRangeRes{}, fmt.Errorf("could not decompress object data: %w", err)
+	}
+
+	obj := objectSDK.New()
+	if err := obj.Unmarshal(data); err != nil {
+		return common.GetRangeRes{}, fmt.Errorf("could not unmarshal the object: %w", err)
+	}
+
+	from := prm.Range.GetOffset()
+	to := from + prm.Range.GetLength()
+	payload := obj.Payload()
+
+	if pLen := uint64(len(payload)); to < from || pLen < from || pLen < to {
+		return common.GetRangeRes{}, logicerr.Wrap(new(apistatus.ObjectOutOfRange))
+	}
+
+	return common.GetRangeRes{
+		Data: payload[from:to],
+	}, nil
+}
+
+func (s *Store) getObjectData(addr oid.Address) ([]byte, error) {
+	var data []byte
+	tx := s.db.NewTransaction(false)
+	defer tx.Discard()
+
+	item, err := tx.Get(key(addr))
+	if err != nil {
+		if err == badger.ErrKeyNotFound {
+			return nil, logicerr.Wrap(new(apistatus.ObjectNotFound))
+		}
+		return nil, err
+	}
+
+	data, err = item.ValueCopy(nil)
+	if err != nil {
+		return nil, err
+	}
+	return data, nil
+}

pkg/local_object_storage/blobstor/badgerstore/iterate.go

@@ -0,0 +1,113 @@
+package badgerstore
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	"github.com/dgraph-io/badger/v4"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
+)
+
+// Iterate implements common.Storage.
+func (s *Store) Iterate(ctx context.Context, prm common.IteratePrm) (common.IterateRes, error) {
+	_, span := tracing.StartSpanFromContext(ctx, "BadgerStore.Iterate",
+		trace.WithAttributes(
+			attribute.String("path", s.cfg.db.Dir),
+			attribute.Bool("ignore_errors", prm.IgnoreErrors),
+		))
+	defer span.End()
+
+	var last []byte
+	opts := badger.DefaultIteratorOptions
+	batch := make([]keyValue, 0, opts.PrefetchSize)
+	opts.PrefetchSize++ // to skip last
+	for {
+		select {
+		case <-ctx.Done():
+			return common.IterateRes{}, ctx.Err()
+		default:
+		}
+
+		batch = batch[:0]
+		err := s.db.View(func(tx *badger.Txn) error {
+			it := tx.NewIterator(opts)
+			defer it.Close()
+
+			for it.Seek(last); it.Valid(); it.Next() {
+				if bytes.Equal(last, it.Item().Key()) {
+					continue
+				}
+
+				var kv keyValue
+				var err error
+				kv.key = it.Item().KeyCopy(nil)
+				kv.value, err = it.Item().ValueCopy(nil)
+				if err != nil {
+					if prm.IgnoreErrors {
+						continue
+					}
+					return err
+				}
+				batch = append(batch, kv)
+				last = kv.key
+				if len(batch) == opts.PrefetchSize-1 {
+					break
+				}
+			}
+			return nil
+		})
+		if err != nil {
+			return common.IterateRes{}, err
+		}
+
+		select {
+		case <-ctx.Done():
+			return common.IterateRes{}, ctx.Err()
+		default:
+		}
+
+		if len(batch) == 0 {
+			break
+		}
+		if err := s.iterateBatch(batch, prm); err != nil {
+			return common.IterateRes{}, err
+		}
+	}
+
+	return common.IterateRes{}, nil
+}
+
+func (s *Store) iterateBatch(batch []keyValue, prm common.IteratePrm) error {
+	for _, kv := range batch {
+		addr, err := address(kv.key)
+		if err != nil {
+			if prm.IgnoreErrors {
+				continue
+			}
+		}
+		data, err := s.cfg.compression.Decompress(kv.value)
+		if err != nil {
+			if prm.IgnoreErrors {
+				continue
+			}
+			return fmt.Errorf("could not decompress object data: %w", err)
+		}
+
+		if err := prm.Handler(common.IterationElement{
+			Address:    addr,
+			ObjectData: data,
+			StorageID:  defaultStorageID,
+		}); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+type keyValue struct {
+	key, value []byte
+}

pkg/local_object_storage/blobstor/badgerstore/keys.go

@@ -0,0 +1,33 @@
+package badgerstore
+
+import (
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+)
+
+const (
+	keyLength      = 64
+	objectIDOffset = 32
+)
+
+func key(add oid.Address) []byte {
+	res := make([]byte, keyLength)
+	add.Container().Encode(res)
+	add.Object().Encode(res[objectIDOffset:])
+	return res
+}
+
+func address(k []byte) (oid.Address, error) {
+	var res oid.Address
+	var containerID cid.ID
+	var objectID oid.ID
+	if err := containerID.Decode(k[:objectIDOffset]); err != nil {
+		return res, err
+	}
+	if err := objectID.Decode(k[objectIDOffset:]); err != nil {
+		return res, err
+	}
+	res.SetContainer(containerID)
+	res.SetObject(objectID)
+	return res, nil
+}

pkg/local_object_storage/blobstor/badgerstore/put.go

@@ -0,0 +1,40 @@
+package badgerstore
+
+import (
+	"context"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
+)
+
+var defaultStorageID = []byte("badger")
+
+// Put implements common.Storage.
+func (s *Store) Put(ctx context.Context, prm common.PutPrm) (common.PutRes, error) {
+	_, span := tracing.StartSpanFromContext(ctx, "BadgerStore.Put",
+		trace.WithAttributes(
+			attribute.String("path", s.cfg.db.Dir),
+			attribute.String("address", prm.Address.EncodeToString()),
+			attribute.Bool("dont_compress", prm.DontCompress),
+		))
+	defer span.End()
+
+	if s.readOnly() {
+		return common.PutRes{}, common.ErrReadOnly
+	}
+
+	if !prm.DontCompress {
+		prm.RawData = s.cfg.compression.Compress(prm.RawData)
+	}
+
+	tx := s.db.NewTransaction(true)
+	defer tx.Discard()
+
+	err := tx.Set(key(prm.Address), prm.RawData)
+	if err != nil {
+		return common.PutRes{}, err
+	}
+	return common.PutRes{StorageID: defaultStorageID}, tx.Commit()
+}

pkg/local_object_storage/blobstor/badgerstore/store.go

@@ -0,0 +1,71 @@
+package badgerstore
+
+import (
+	"context"
+	"sync"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
+	"github.com/dgraph-io/badger/v4"
+)
+
+const (
+	Type = "badgerstore"
+)
+
+var _ common.Storage = (*Store)(nil)
+
+type Store struct {
+	cfg *cfg
+	db  *badger.DB
+
+	modeMtx  *sync.Mutex // protects fields in group below
+	opened   bool
+	gcCancel context.CancelFunc
+
+	wg *sync.WaitGroup
+}
+
+// New returns new Store instance with opts applied.
+func New(opts ...Option) *Store {
+	s := &Store{
+		cfg:     defaultCfg(),
+		modeMtx: &sync.Mutex{},
+		wg:      &sync.WaitGroup{},
+	}
+	for _, opt := range opts {
+		opt(s.cfg)
+	}
+	return s
+}
+
+// Compressor implements common.Storage.
+func (s *Store) Compressor() *compression.Config {
+	return s.cfg.compression
+}
+
+// Path implements common.Storage.
+func (s *Store) Path() string {
+	return s.cfg.db.Dir
+}
+
+// SetCompressor implements common.Storage.
+func (s *Store) SetCompressor(cc *compression.Config) {
+	s.cfg.compression = cc
+}
+
+// SetParentID implements common.Storage.
+func (*Store) SetParentID(parentID string) {}
+
+// SetReportErrorFunc implements common.Storage.
+func (*Store) SetReportErrorFunc(func(string, error)) {}
+
+// Type implements common.Storage.
+func (*Store) Type() string {
+	return Type
+}
+
+// Rebuild implements common.Storage.
+func (*Store) Rebuild(context.Context, common.RebuildPrm) (common.RebuildRes, error) {
+	return common.RebuildRes{}, nil
+}

pkg/local_object_storage/blobstor/perf_test.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"testing"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/badgerstore"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/blobovniczatree"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/fstree"
@@ -77,6 +78,14 @@ var storages = []storage{
 			)
 		},
 	},
+	{
+		desc: "badger",
+		create: func(dir string) common.Storage {
+			return badgerstore.New(
+				badgerstore.WithPath(dir),
+			)
+		},
+	},
 }
 
 func BenchmarkSubstorageReadPerf(b *testing.B) {