diff --git a/pkg/common/storage/database/mgo/friend.go b/pkg/common/storage/database/mgo/friend.go
index 19b2f4f18..2df85a430 100644
--- a/pkg/common/storage/database/mgo/friend.go
+++ b/pkg/common/storage/database/mgo/friend.go
@@ -54,7 +54,7 @@ func NewFriendMongo(db *mongo.Database) (database.Friend, error) {
 
 // Create inserts multiple friend records.
 func (f *FriendMgo) Create(ctx context.Context, friends []*model.Friend) error {
-	return IncrVersion(func() error {
+	return mongoutil.IncrVersion(func() error {
 		return mongoutil.InsertMany(ctx, f.coll, friends)
 	}, func() error {
 		mp := make(map[string][]string)
@@ -76,7 +76,7 @@ func (f *FriendMgo) Delete(ctx context.Context, ownerUserID string, friendUserID
 		"owner_user_id":  ownerUserID,
 		"friend_user_id": bson.M{"$in": friendUserIDs},
 	}
-	return IncrVersion(func() error {
+	return mongoutil.IncrVersion(func() error {
 		return mongoutil.DeleteOne(ctx, f.coll, filter)
 	}, func() error {
 		return f.owner.WriteLog(ctx, ownerUserID, friendUserIDs, true)
@@ -92,7 +92,7 @@ func (f *FriendMgo) UpdateByMap(ctx context.Context, ownerUserID string, friendU
 		"owner_user_id":  ownerUserID,
 		"friend_user_id": friendUserID,
 	}
-	return IncrVersion(func() error {
+	return mongoutil.IncrVersion(func() error {
 		return mongoutil.UpdateOne(ctx, f.coll, filter, bson.M{"$set": args}, true)
 	}, func() error {
 		return f.owner.WriteLog(ctx, ownerUserID, []string{friendUserID}, false)
@@ -152,13 +152,6 @@ func (f *FriendMgo) FindOwnerFriends(ctx context.Context, ownerUserID string, pa
 func (f *FriendMgo) FindOwnerFriendUserIds(ctx context.Context, ownerUserID string, limit int) ([]string, error) {
 	filter := bson.M{"owner_user_id": ownerUserID}
 	opt := options.Find().SetProjection(bson.M{"_id": 0, "friend_user_id": 1}).SetSort(bson.D{{"friend_nickname", 1}, {"create_time", 1}}).SetLimit(int64(limit))
-	//res, err := mongoutil.Find[string](ctx, f.coll, filter, opt)
-	//if err != nil {
-	//	errMsg := err.Error()
-	//	_ = errMsg
-	//	return nil, err
-	//}
-	//return res, nil
 	return mongoutil.Find[string](ctx, f.coll, filter, opt)
 }
 
@@ -189,7 +182,7 @@ func (f *FriendMgo) UpdateFriends(ctx context.Context, ownerUserID string, frien
 	// Create an update document
 	update := bson.M{"$set": val}
 
-	return IncrVersion(func() error {
+	return mongoutil.IncrVersion(func() error {
 		return mongoutil.Ignore(mongoutil.UpdateMany(ctx, f.coll, filter, update))
 	}, func() error {
 		return f.owner.WriteLog(ctx, ownerUserID, friendUserIDs, false)
@@ -227,12 +220,3 @@ func (f *FriendMgo) SearchFriend(ctx context.Context, ownerUserID, keyword strin
 	//return f.aggregatePagination(ctx, where, pagination)
 	panic("todo")
 }
-
-func IncrVersion(dbs ...func() error) error {
-	for _, fn := range dbs {
-		if err := fn(); err != nil {
-			return err
-		}
-	}
-	return nil
-}