diff --git a/pkg/local_object_storage/engine/writecache.go b/pkg/local_object_storage/engine/writecache.go
index f30bce00..850e10d1 100644
--- a/pkg/local_object_storage/engine/writecache.go
+++ b/pkg/local_object_storage/engine/writecache.go
@@ -150,20 +150,20 @@ func (m *writeCacheMetrics) SetShardID(id string) {
 }
 
 func (m *writeCacheMetrics) Get(d time.Duration, success bool, st writecache.StorageType) {
-	m.metrics.AddMethodDuration(m.shardID, "Get", success, d, st.String())
+	m.metrics.AddMethodDuration(m.shardID, st.String(), "Get", success, d)
 }
 
 func (m *writeCacheMetrics) Delete(d time.Duration, success bool, st writecache.StorageType) {
-	m.metrics.AddMethodDuration(m.shardID, "Delete", success, d, st.String())
+	m.metrics.AddMethodDuration(m.shardID, st.String(), "Delete", success, d)
 }
 
 func (m *writeCacheMetrics) Put(d time.Duration, success bool, st writecache.StorageType) {
-	m.metrics.AddMethodDuration(m.shardID, "Put", success, d, st.String())
+	m.metrics.AddMethodDuration(m.shardID, st.String(), "Put", success, d)
 }
 
 func (m *writeCacheMetrics) SetEstimateSize(db, fstree uint64) {
-	m.metrics.SetEstimateSize(m.shardID, db, writecache.StorageTypeDB.String())
-	m.metrics.SetEstimateSize(m.shardID, fstree, writecache.StorageTypeFSTree.String())
+	m.metrics.SetEstimateSize(m.shardID, writecache.StorageTypeDB.String(), db)
+	m.metrics.SetEstimateSize(m.shardID, writecache.StorageTypeFSTree.String(), fstree)
 }
 
 func (m *writeCacheMetrics) SetMode(mode mode.Mode) {
@@ -171,16 +171,16 @@ func (m *writeCacheMetrics) SetMode(mode mode.Mode) {
 }
 
 func (m *writeCacheMetrics) SetActualCounters(db, fstree uint64) {
-	m.metrics.SetActualCount(m.shardID, db, writecache.StorageTypeDB.String())
-	m.metrics.SetActualCount(m.shardID, fstree, writecache.StorageTypeFSTree.String())
+	m.metrics.SetActualCount(m.shardID, writecache.StorageTypeDB.String(), db)
+	m.metrics.SetActualCount(m.shardID, writecache.StorageTypeFSTree.String(), fstree)
 }
 
 func (m *writeCacheMetrics) Flush(success bool, st writecache.StorageType) {
-	m.metrics.IncOperationCounter(m.shardID, "Flush", metrics.NullBool{Bool: success, Valid: true}, st.String())
+	m.metrics.IncOperationCounter(m.shardID, st.String(), "Flush", metrics.NullBool{Bool: success, Valid: true})
 }
 
 func (m *writeCacheMetrics) Evict(st writecache.StorageType) {
-	m.metrics.IncOperationCounter(m.shardID, "Evict", metrics.NullBool{}, st.String())
+	m.metrics.IncOperationCounter(m.shardID, st.String(), "Evict", metrics.NullBool{})
 }
 
 func (m *writeCacheMetrics) Close() {
diff --git a/pkg/metrics/mode.go b/pkg/metrics/mode.go
index cf6bdac4..a9ac47ac 100644
--- a/pkg/metrics/mode.go
+++ b/pkg/metrics/mode.go
@@ -21,7 +21,7 @@ func newShardIDMode(subsystem, name, help string) *shardIDModeValue {
 	}
 }
 
-func (m *shardIDModeValue) SetMode(shardID string, mode string) {
+func (m *shardIDModeValue) SetMode(shardID, mode string) {
 	m.modeValue.DeletePartialMatch(prometheus.Labels{
 		shardIDLabel: shardID,
 	})
@@ -54,7 +54,7 @@ func newShardIDPathMode(subsystem, name, help string) *shardIDPathModeValue {
 	}
 }
 
-func (m *shardIDPathModeValue) SetMode(shardID, path string, mode string) {
+func (m *shardIDPathModeValue) SetMode(shardID, path, mode string) {
 	m.modeValue.DeletePartialMatch(prometheus.Labels{
 		shardIDLabel: shardID,
 		pathLabel:    path,
diff --git a/pkg/metrics/writecache.go b/pkg/metrics/writecache.go
index ea3d8742..70181ee2 100644
--- a/pkg/metrics/writecache.go
+++ b/pkg/metrics/writecache.go
@@ -9,11 +9,11 @@ import (
 )
 
 type WriteCacheMetrics interface {
-	AddMethodDuration(shardID string, method string, success bool, d time.Duration, storageType string)
-	SetActualCount(shardID string, count uint64, storageType string)
-	SetEstimateSize(shardID string, size uint64, storageType string)
-	SetMode(shardID string, mode string)
-	IncOperationCounter(shardID string, operation string, success NullBool, storageType string)
+	AddMethodDuration(shardID, storageType, method string, success bool, d time.Duration)
+	SetActualCount(shardID, storageType string, count uint64)
+	SetEstimateSize(shardID, storageType string, size uint64)
+	SetMode(shardID, mode string)
+	IncOperationCounter(shardID, storageType, operation string, success NullBool)
 	Close(shardID string)
 }
 
@@ -48,7 +48,7 @@ func newWriteCacheMetrics() *writeCacheMetrics {
 	}
 }
 
-func (m *writeCacheMetrics) AddMethodDuration(shardID string, method string, success bool, d time.Duration, storageType string) {
+func (m *writeCacheMetrics) AddMethodDuration(shardID, storageType, method string, success bool, d time.Duration) {
 	m.methodDuration.With(
 		prometheus.Labels{
 			shardIDLabel: shardID,
@@ -59,14 +59,14 @@ func (m *writeCacheMetrics) AddMethodDuration(shardID string, method string, suc
 	).Observe(d.Seconds())
 }
 
-func (m *writeCacheMetrics) SetActualCount(shardID string, count uint64, storageType string) {
+func (m *writeCacheMetrics) SetActualCount(shardID, storageType string, count uint64) {
 	m.actualCount.With(prometheus.Labels{
 		shardIDLabel: shardID,
 		storageLabel: storageType,
 	}).Set(float64(count))
 }
 
-func (m *writeCacheMetrics) SetEstimateSize(shardID string, size uint64, storageType string) {
+func (m *writeCacheMetrics) SetEstimateSize(shardID, storageType string, size uint64) {
 	m.estimatedSize.With(prometheus.Labels{
 		shardIDLabel: shardID,
 		storageLabel: storageType,
@@ -77,7 +77,7 @@ func (m *writeCacheMetrics) SetMode(shardID string, mode string) {
 	m.mode.SetMode(shardID, mode)
 }
 
-func (m *writeCacheMetrics) IncOperationCounter(shardID string, operation string, success NullBool, storageType string) {
+func (m *writeCacheMetrics) IncOperationCounter(shardID, storageType, operation string, success NullBool) {
 	m.operationCounter.With(prometheus.Labels{
 		shardIDLabel:   shardID,
 		storageLabel:   storageType,