diff --git a/pkg/local_object_storage/blobstor/blobovniczatree/blobovnicza.go b/pkg/local_object_storage/blobstor/blobovniczatree/blobovnicza.go
index 1b0af342..a23bba42 100644
--- a/pkg/local_object_storage/blobstor/blobovniczatree/blobovnicza.go
+++ b/pkg/local_object_storage/blobstor/blobovniczatree/blobovnicza.go
@@ -252,6 +252,10 @@ func (b *Blobovniczas) SetCompressor(cc *compression.Config) {
 	b.compression = cc
 }
 
+func (b *Blobovniczas) Compressor() *compression.Config {
+	return b.compression
+}
+
 // SetReportErrorFunc implements common.Storage.
 func (b *Blobovniczas) SetReportErrorFunc(f func(string, error)) {
 	b.reportError = f
diff --git a/pkg/local_object_storage/blobstor/blobstor.go b/pkg/local_object_storage/blobstor/blobstor.go
index 6c6aed87..d2a2338a 100644
--- a/pkg/local_object_storage/blobstor/blobstor.go
+++ b/pkg/local_object_storage/blobstor/blobstor.go
@@ -128,3 +128,7 @@ func WithMetrics(m Metrics) Option {
 		c.metrics = m
 	}
 }
+
+func (b *BlobStor) Compressor() *compression.Config {
+	return &b.cfg.compression
+}
diff --git a/pkg/local_object_storage/blobstor/blobstor_test.go b/pkg/local_object_storage/blobstor/blobstor_test.go
index ef85f0f1..87845206 100644
--- a/pkg/local_object_storage/blobstor/blobstor_test.go
+++ b/pkg/local_object_storage/blobstor/blobstor_test.go
@@ -146,33 +146,33 @@ func TestBlobstor_needsCompression(t *testing.T) {
 		b := newBlobStor(t, true, "audio/*", "*/x-mpeg", "*/mpeg", "application/x-midi")
 
 		obj := newObjectWithCt("video/mpeg")
-		require.False(t, b.NeedsCompression(obj))
+		require.False(t, b.compression.NeedsCompression(obj))
 
 		obj = newObjectWithCt("audio/aiff")
-		require.False(t, b.NeedsCompression(obj))
+		require.False(t, b.compression.NeedsCompression(obj))
 
 		obj = newObjectWithCt("application/x-midi")
-		require.False(t, b.NeedsCompression(obj))
+		require.False(t, b.compression.NeedsCompression(obj))
 
 		obj = newObjectWithCt("text/plain")
-		require.True(t, b.NeedsCompression(obj))
+		require.True(t, b.compression.NeedsCompression(obj))
 
 		obj = newObjectWithCt("")
-		require.True(t, b.NeedsCompression(obj))
+		require.True(t, b.compression.NeedsCompression(obj))
 	})
 	t.Run("content-types omitted", func(t *testing.T) {
 		b := newBlobStor(t, true)
 		obj := newObjectWithCt("video/mpeg")
-		require.True(t, b.NeedsCompression(obj))
+		require.True(t, b.compression.NeedsCompression(obj))
 	})
 	t.Run("compress disabled", func(t *testing.T) {
 		b := newBlobStor(t, false, "video/mpeg")
 
 		obj := newObjectWithCt("video/mpeg")
-		require.False(t, b.NeedsCompression(obj))
+		require.False(t, b.compression.NeedsCompression(obj))
 
 		obj = newObjectWithCt("text/plain")
-		require.False(t, b.NeedsCompression(obj))
+		require.False(t, b.compression.NeedsCompression(obj))
 	})
 }
 
diff --git a/pkg/local_object_storage/blobstor/common/storage.go b/pkg/local_object_storage/blobstor/common/storage.go
index b808480e..852f020c 100644
--- a/pkg/local_object_storage/blobstor/common/storage.go
+++ b/pkg/local_object_storage/blobstor/common/storage.go
@@ -15,7 +15,10 @@ type Storage interface {
 
 	Type() string
 	Path() string
+
 	SetCompressor(cc *compression.Config)
+	Compressor() *compression.Config
+
 	// SetReportErrorFunc allows to provide a function to be called on disk errors.
 	// This function MUST be called before Open.
 	SetReportErrorFunc(f func(string, error))
diff --git a/pkg/local_object_storage/blobstor/fstree/fstree.go b/pkg/local_object_storage/blobstor/fstree/fstree.go
index 5fbbdfea..637bf843 100644
--- a/pkg/local_object_storage/blobstor/fstree/fstree.go
+++ b/pkg/local_object_storage/blobstor/fstree/fstree.go
@@ -550,6 +550,10 @@ func (t *FSTree) SetCompressor(cc *compression.Config) {
 	t.Config = cc
 }
 
+func (t *FSTree) Compressor() *compression.Config {
+	return t.Config
+}
+
 // SetReportErrorFunc implements common.Storage.
 func (t *FSTree) SetReportErrorFunc(_ func(string, error)) {
 	// Do nothing, FSTree can encounter only one error which is returned.
diff --git a/pkg/local_object_storage/blobstor/memstore/control.go b/pkg/local_object_storage/blobstor/memstore/control.go
index e6943626..7f6e85a1 100644
--- a/pkg/local_object_storage/blobstor/memstore/control.go
+++ b/pkg/local_object_storage/blobstor/memstore/control.go
@@ -12,5 +12,6 @@ func (s *memstoreImpl) Close() error                             { return nil }
 func (s *memstoreImpl) Type() string                             { return Type }
 func (s *memstoreImpl) Path() string                             { return s.rootPath }
 func (s *memstoreImpl) SetCompressor(cc *compression.Config)     { s.compression = cc }
+func (s *memstoreImpl) Compressor() *compression.Config          { return s.compression }
 func (s *memstoreImpl) SetReportErrorFunc(f func(string, error)) { s.reportError = f }
 func (s *memstoreImpl) SetParentID(string)                       {}
diff --git a/pkg/local_object_storage/blobstor/put.go b/pkg/local_object_storage/blobstor/put.go
index a748750d..1adae303 100644
--- a/pkg/local_object_storage/blobstor/put.go
+++ b/pkg/local_object_storage/blobstor/put.go
@@ -9,7 +9,6 @@ import (
 	"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"
-	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/trace"
 )
@@ -72,11 +71,3 @@ func (b *BlobStor) Put(ctx context.Context, prm common.PutPrm) (common.PutRes, e
 
 	return common.PutRes{}, ErrNoPlaceFound
 }
-
-// NeedsCompression returns true if the object should be compressed.
-// For an object to be compressed 2 conditions must hold:
-// 1. Compression is enabled in settings.
-// 2. Object MIME Content-Type is allowed for compression.
-func (b *BlobStor) NeedsCompression(obj *objectSDK.Object) bool {
-	return b.cfg.compression.NeedsCompression(obj)
-}
diff --git a/pkg/local_object_storage/blobstor/teststore/option.go b/pkg/local_object_storage/blobstor/teststore/option.go
index 2797a1ee..b897832c 100644
--- a/pkg/local_object_storage/blobstor/teststore/option.go
+++ b/pkg/local_object_storage/blobstor/teststore/option.go
@@ -15,6 +15,7 @@ type cfg struct {
 		Type               func() string
 		Path               func() string
 		SetCompressor      func(cc *compression.Config)
+		Compressor         func() *compression.Config
 		SetReportErrorFunc func(f func(string, error))
 
 		Get      func(common.GetPrm) (common.GetRes, error)
@@ -45,6 +46,10 @@ func WithSetCompressor(f func(*compression.Config)) Option {
 	return func(c *cfg) { c.overrides.SetCompressor = f }
 }
 
+func WithCompressor(f func() *compression.Config) Option {
+	return func(c *cfg) { c.overrides.Compressor = f }
+}
+
 func WithReportErrorFunc(f func(func(string, error))) Option {
 	return func(c *cfg) { c.overrides.SetReportErrorFunc = f }
 }
diff --git a/pkg/local_object_storage/blobstor/teststore/teststore.go b/pkg/local_object_storage/blobstor/teststore/teststore.go
index 2508d74f..3e5b2125 100644
--- a/pkg/local_object_storage/blobstor/teststore/teststore.go
+++ b/pkg/local_object_storage/blobstor/teststore/teststore.go
@@ -128,6 +128,19 @@ func (s *TestStore) SetCompressor(cc *compression.Config) {
 	}
 }
 
+func (s *TestStore) Compressor() *compression.Config {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	switch {
+	case s.overrides.Compressor != nil:
+		return s.overrides.Compressor()
+	case s.st != nil:
+		return s.st.Compressor()
+	default:
+		panic("unexpected storage call: Compressor()")
+	}
+}
+
 func (s *TestStore) SetReportErrorFunc(f func(string, error)) {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
diff --git a/pkg/local_object_storage/writecache/benchmark/writecache_test.go b/pkg/local_object_storage/writecache/benchmark/writecache_test.go
index 4c44b1d4..6ae04a92 100644
--- a/pkg/local_object_storage/writecache/benchmark/writecache_test.go
+++ b/pkg/local_object_storage/writecache/benchmark/writecache_test.go
@@ -3,50 +3,120 @@ package benchmark
 import (
 	"context"
 	"testing"
+	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/teststore"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
+	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache/writecachebadger"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache/writecachebbolt"
-	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
+	"github.com/stretchr/testify/require"
 )
 
-func BenchmarkWritecache(b *testing.B) {
-	b.Run("bbolt", func(b *testing.B) {
-		cache := writecachebbolt.New(
-			writecachebbolt.WithPath(b.TempDir()),
-		)
-		benchmarkPut(b, cache)
+func BenchmarkWritecacheSeq(b *testing.B) {
+	const payloadSize = 8 << 10
+	b.Run("bbolt_seq", func(b *testing.B) {
+		benchmarkPutSeq(b, newBBoltCache(b), payloadSize)
 	})
-	b.Run("badger", func(b *testing.B) {
-		cache := writecachebadger.New(
-			writecachebadger.WithPath(b.TempDir()),
-		)
-		benchmarkPut(b, cache)
+	b.Run("badger_seq", func(b *testing.B) {
+		benchmarkPutSeq(b, newBadgerCache(b), payloadSize)
 	})
 }
 
-func benchmarkPut(b *testing.B, cache writecache.Cache) {
-	if err := cache.Open(false); err != nil {
-		b.Fatalf("initializing: %v", err)
-	}
-	if err := cache.Init(); err != nil {
-		b.Fatalf("opening: %v", err)
-	}
-	defer cache.Close()
+func BenchmarkWritecachePar(b *testing.B) {
+	const payloadSize = 8 << 10
+	b.Run("bbolt_par", func(b *testing.B) {
+		benchmarkPutPar(b, newBBoltCache(b), payloadSize)
+	})
+	b.Run("badger_par", func(b *testing.B) {
+		benchmarkPutPar(b, newBadgerCache(b), payloadSize)
+	})
+}
+
+func benchmarkPutSeq(b *testing.B, cache writecache.Cache, size uint64) {
+	benchmarkPutPrepare(b, cache)
 
 	ctx := context.Background()
-	objGen := testutil.RandObjGenerator{ObjSize: 8 << 10}
+	objGen := testutil.RandObjGenerator{ObjSize: size}
 
 	b.ResetTimer()
 	for n := 0; n < b.N; n++ {
+		obj := objGen.Next()
+		rawData, err := obj.Marshal()
+		require.NoError(b, err, "marshaling object")
 		prm := common.PutPrm{
-			Address: oidtest.Address(),
-			Object:  objGen.Next(),
+			Address: testutil.AddressFromObject(b, obj),
+			Object:  obj,
+			RawData: rawData,
 		}
 		if _, err := cache.Put(ctx, prm); err != nil {
 			b.Fatalf("putting: %v", err)
 		}
 	}
 }
+
+func benchmarkPutPar(b *testing.B, cache writecache.Cache, size uint64) {
+	benchmarkPutPrepare(b, cache)
+
+	ctx := context.Background()
+
+	b.ResetTimer()
+	b.RunParallel(func(pb *testing.PB) {
+		objGen := testutil.RandObjGenerator{ObjSize: size}
+		for pb.Next() {
+			obj := objGen.Next()
+			rawData, err := obj.Marshal()
+			require.NoError(b, err, "marshaling object")
+			prm := common.PutPrm{
+				Address: testutil.AddressFromObject(b, obj),
+				Object:  obj,
+				RawData: rawData,
+			}
+			if _, err := cache.Put(ctx, prm); err != nil {
+				b.Fatalf("putting: %v", err)
+			}
+		}
+	})
+}
+
+func benchmarkPutPrepare(b *testing.B, cache writecache.Cache) {
+	require.NoError(b, cache.Open(false), "opening")
+	require.NoError(b, cache.Init(), "initializing")
+	b.Cleanup(func() {
+		require.NoError(b, cache.Close(), "closing")
+	})
+}
+
+type testMetabase struct{}
+
+func (testMetabase) UpdateStorageID(meta.UpdateStorageIDPrm) (meta.UpdateStorageIDRes, error) {
+	return meta.UpdateStorageIDRes{}, nil
+}
+
+func newBBoltCache(b *testing.B) writecache.Cache {
+	bs := teststore.New(
+		teststore.WithPut(func(pp common.PutPrm) (common.PutRes, error) { return common.PutRes{}, nil }),
+	)
+	return writecachebbolt.New(
+		writecachebbolt.WithPath(b.TempDir()),
+		writecachebbolt.WithBlobstor(bs),
+		writecachebbolt.WithMetabase(testMetabase{}),
+		writecachebbolt.WithMaxCacheSize(256<<30),
+		writecachebbolt.WithSmallObjectSize(128<<10),
+	)
+}
+
+func newBadgerCache(b *testing.B) writecache.Cache {
+	bs := teststore.New(
+		teststore.WithPut(func(pp common.PutPrm) (common.PutRes, error) { return common.PutRes{}, nil }),
+	)
+	return writecachebadger.New(
+		writecachebadger.WithPath(b.TempDir()),
+		writecachebadger.WithBlobstor(bs),
+		writecachebadger.WithMetabase(testMetabase{}),
+		writecachebadger.WithMaxCacheSize(256<<30),
+		writecachebadger.WithGCInterval(10*time.Second),
+	)
+}
diff --git a/pkg/local_object_storage/writecache/writecache.go b/pkg/local_object_storage/writecache/writecache.go
index 084c9a3a..8c863735 100644
--- a/pkg/local_object_storage/writecache/writecache.go
+++ b/pkg/local_object_storage/writecache/writecache.go
@@ -5,6 +5,8 @@ import (
 	"errors"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
+	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
@@ -40,6 +42,18 @@ type Cache interface {
 	Close() error
 }
 
+// MainStorage is the interface of the underlying storage of Cache implementations.
+type MainStorage interface {
+	Compressor() *compression.Config
+	Exists(context.Context, common.ExistsPrm) (common.ExistsRes, error)
+	Put(context.Context, common.PutPrm) (common.PutRes, error)
+}
+
+// Metabase is the interface of the metabase used by Cache implementations.
+type Metabase interface {
+	UpdateStorageID(meta.UpdateStorageIDPrm) (meta.UpdateStorageIDRes, error)
+}
+
 var (
 	// ErrReadOnly is returned when Put/Write is performed in a read-only mode.
 	ErrReadOnly = logicerr.New("write-cache is in read-only mode")
diff --git a/pkg/local_object_storage/writecache/writecachebadger/flush_test.go b/pkg/local_object_storage/writecache/writecachebadger/flush_test.go
index 4d65d585..90e584e0 100644
--- a/pkg/local_object_storage/writecache/writecachebadger/flush_test.go
+++ b/pkg/local_object_storage/writecache/writecachebadger/flush_test.go
@@ -6,7 +6,6 @@ import (
 	"testing"
 	"time"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
 	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache"
@@ -19,7 +18,7 @@ import (
 )
 
 func TestFlush(t *testing.T) {
-	createCacheFn := func(t *testing.T, smallSize uint64, mb *meta.DB, bs *blobstor.BlobStor, opts ...Option) writecache.Cache {
+	createCacheFn := func(t *testing.T, smallSize uint64, mb *meta.DB, bs writecache.MainStorage, opts ...Option) writecache.Cache {
 		return New(
 			append([]Option{
 				WithLogger(&logger.Logger{Logger: zaptest.NewLogger(t)}),
diff --git a/pkg/local_object_storage/writecache/writecachebadger/options.go b/pkg/local_object_storage/writecache/writecachebadger/options.go
index 1737885b..63bfb196 100644
--- a/pkg/local_object_storage/writecache/writecachebadger/options.go
+++ b/pkg/local_object_storage/writecache/writecachebadger/options.go
@@ -1,43 +1,24 @@
 package writecachebadger
 
 import (
-	"context"
 	"time"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
-	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
-	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	"go.uber.org/zap"
 )
 
 // Option represents write-cache configuration option.
 type Option func(*options)
 
-// meta is an interface for a metabase.
-type metabase interface {
-	Exists(context.Context, meta.ExistsPrm) (meta.ExistsRes, error)
-	StorageID(context.Context, meta.StorageIDPrm) (meta.StorageIDRes, error)
-	UpdateStorageID(meta.UpdateStorageIDPrm) (meta.UpdateStorageIDRes, error)
-}
-
-// blob is an interface for the blobstor.
-type blob interface {
-	Put(context.Context, common.PutPrm) (common.PutRes, error)
-	NeedsCompression(obj *objectSDK.Object) bool
-	Exists(ctx context.Context, res common.ExistsPrm) (common.ExistsRes, error)
-}
-
 type options struct {
 	log *logger.Logger
 	// path is a path to a directory for write-cache.
 	path string
 	// blobstor is the main persistent storage.
-	blobstor blob
+	blobstor writecache.MainStorage
 	// metabase is the metabase instance.
-	metabase metabase
+	metabase writecache.Metabase
 	// maxObjectSize is the maximum size of the object stored in the write-cache.
 	maxObjectSize uint64
 	// workersCount is the number of workers flushing objects in parallel.
@@ -70,14 +51,14 @@ func WithPath(path string) Option {
 }
 
 // WithBlobstor sets main object storage.
-func WithBlobstor(bs *blobstor.BlobStor) Option {
+func WithBlobstor(bs writecache.MainStorage) Option {
 	return func(o *options) {
 		o.blobstor = bs
 	}
 }
 
 // WithMetabase sets metabase.
-func WithMetabase(db *meta.DB) Option {
+func WithMetabase(db writecache.Metabase) Option {
 	return func(o *options) {
 		o.metabase = db
 	}
diff --git a/pkg/local_object_storage/writecache/writecachebbolt/flush_test.go b/pkg/local_object_storage/writecache/writecachebbolt/flush_test.go
index 465410ba..acd18013 100644
--- a/pkg/local_object_storage/writecache/writecachebbolt/flush_test.go
+++ b/pkg/local_object_storage/writecache/writecachebbolt/flush_test.go
@@ -8,7 +8,6 @@ import (
 	"testing"
 
 	objectCore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
 	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
@@ -22,7 +21,7 @@ import (
 )
 
 func TestFlush(t *testing.T) {
-	createCacheFn := func(t *testing.T, smallSize uint64, mb *meta.DB, bs *blobstor.BlobStor, opts ...Option) writecache.Cache {
+	createCacheFn := func(t *testing.T, smallSize uint64, mb *meta.DB, bs writecache.MainStorage, opts ...Option) writecache.Cache {
 		return New(
 			append([]Option{
 				WithLogger(&logger.Logger{Logger: zaptest.NewLogger(t)}),
diff --git a/pkg/local_object_storage/writecache/writecachebbolt/options.go b/pkg/local_object_storage/writecache/writecachebbolt/options.go
index 0a21421c..d8eedfc7 100644
--- a/pkg/local_object_storage/writecache/writecachebbolt/options.go
+++ b/pkg/local_object_storage/writecache/writecachebbolt/options.go
@@ -1,45 +1,26 @@
 package writecachebbolt
 
 import (
-	"context"
 	"io/fs"
 	"os"
 	"time"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor"
-	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
-	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/writecache"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
-	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	"go.uber.org/zap"
 )
 
 // Option represents write-cache configuration option.
 type Option func(*options)
 
-// meta is an interface for a metabase.
-type metabase interface {
-	Exists(context.Context, meta.ExistsPrm) (meta.ExistsRes, error)
-	StorageID(context.Context, meta.StorageIDPrm) (meta.StorageIDRes, error)
-	UpdateStorageID(meta.UpdateStorageIDPrm) (meta.UpdateStorageIDRes, error)
-}
-
-// blob is an interface for the blobstor.
-type blob interface {
-	Put(context.Context, common.PutPrm) (common.PutRes, error)
-	NeedsCompression(obj *objectSDK.Object) bool
-	Exists(ctx context.Context, res common.ExistsPrm) (common.ExistsRes, error)
-}
-
 type options struct {
 	log *logger.Logger
 	// path is a path to a directory for write-cache.
 	path string
 	// blobstor is the main persistent storage.
-	blobstor blob
+	blobstor writecache.MainStorage
 	// metabase is the metabase instance.
-	metabase metabase
+	metabase writecache.Metabase
 	// maxObjectSize is the maximum size of the object stored in the write-cache.
 	maxObjectSize uint64
 	// smallObjectSize is the maximum size of the object stored in the database.
@@ -80,14 +61,14 @@ func WithPath(path string) Option {
 }
 
 // WithBlobstor sets main object storage.
-func WithBlobstor(bs *blobstor.BlobStor) Option {
+func WithBlobstor(bs writecache.MainStorage) Option {
 	return func(o *options) {
 		o.blobstor = bs
 	}
 }
 
 // WithMetabase sets metabase.
-func WithMetabase(db *meta.DB) Option {
+func WithMetabase(db writecache.Metabase) Option {
 	return func(o *options) {
 		o.metabase = db
 	}
diff --git a/pkg/local_object_storage/writecache/writecachebbolt/put.go b/pkg/local_object_storage/writecache/writecachebbolt/put.go
index 505d091a..48b130d2 100644
--- a/pkg/local_object_storage/writecache/writecachebbolt/put.go
+++ b/pkg/local_object_storage/writecache/writecachebbolt/put.go
@@ -112,7 +112,7 @@ func (c *cache) putBig(ctx context.Context, addr string, prm common.PutPrm) erro
 		return err
 	}
 
-	if c.blobstor.NeedsCompression(prm.Object) {
+	if compressor := c.blobstor.Compressor(); compressor != nil && compressor.NeedsCompression(prm.Object) {
 		c.mtx.Lock()
 		c.compressFlags[addr] = struct{}{}
 		c.mtx.Unlock()
diff --git a/pkg/local_object_storage/writecache/writecachetest/flush.go b/pkg/local_object_storage/writecache/writecachetest/flush.go
index e36778e0..05b4b23a 100644
--- a/pkg/local_object_storage/writecache/writecachetest/flush.go
+++ b/pkg/local_object_storage/writecache/writecachetest/flush.go
@@ -28,7 +28,7 @@ type CreateCacheFunc[Option any] func(
 	t *testing.T,
 	smallSize uint64,
 	meta *meta.DB,
-	bs *blobstor.BlobStor,
+	bs writecache.MainStorage,
 	opts ...Option,
 ) writecache.Cache