diff --git a/pkg/structure/interface.gen.go b/pkg/structure/interface.gen.go
index 6ed2c1e..b9b806a 100644
--- a/pkg/structure/interface.gen.go
+++ b/pkg/structure/interface.gen.go
@@ -15,10 +15,10 @@ type KeyBaseInterface interface {
 
 type StringXInterface interface {
 	KeyBaseInterface
-	Set(val string) (string, UpdateLength)
+	Set(string) (string, UpdateLength)
 	Get() string
-	Add(renewal int32) (string, error)
-	Reduce(renewal int32) (string, error)
-	Setbit(offer int32, val bool) UpdateLength
-	Getbit(offer int32) (bool, error)
+	Add(int32) (string, error)
+	Reduce(int32) (string, error)
+	Setbit(int32, bool) UpdateLength
+	Getbit(int32) (bool, error)
 }
diff --git a/storage/dao/dao.go b/storage/dao/dao.go
index 8cd9b04..d061e5e 100644
--- a/storage/dao/dao.go
+++ b/storage/dao/dao.go
@@ -32,9 +32,11 @@ func (d *Dao) Set(key *proto.BaseKey, strVal string) (string, error) {
 
 	// 不存在新建
 	strValue := stringx.NewStringSingle()
-	result, length := strValue.Set(strVal)
-	d.lru.Add(key, strValue)
-	d.lru.UpdateLruSize(length)
+	result, _ := strValue.Set(strVal)
+	err := d.lru.Add(key, strValue)
+	if err != nil {
+		return "", err
+	}
 	return result, nil
 }