diff --git a/memcached/memcached.go b/memcached/memcached.go
index 4399110f..b2653f13 100644
--- a/memcached/memcached.go
+++ b/memcached/memcached.go
@@ -21,21 +21,21 @@ func New(config ...Config) Storage {
 }
 
 // Get value by key
-func (store Storage) Get(key string) ([]byte, error) {
+func (store *Storage) Get(key string) ([]byte, error) {
 	return []byte{}, nil
 }
 
 // Set key with value
-func (store Storage) Set(key string, val []byte, exp time.Duration) error {
+func (store *Storage) Set(key string, val []byte, exp time.Duration) error {
 	return nil
 }
 
 // Delete key by key
-func (store Storage) Delete(key string) error {
+func (store *Storage) Delete(key string) error {
 	return nil
 }
 
 // Clear all keys
-func (store Storage) Clear() error {
+func (store *Storage) Clear() error {
 	return nil
 }
diff --git a/mysql/mysql.go b/mysql/mysql.go
index d3ab2ae4..93335f38 100644
--- a/mysql/mysql.go
+++ b/mysql/mysql.go
@@ -21,21 +21,21 @@ func New(config ...Config) Storage {
 }
 
 // Get value by key
-func (store Storage) Get(key string) ([]byte, error) {
+func (store *Storage) Get(key string) ([]byte, error) {
 	return []byte{}, nil
 }
 
 // Set key with value
-func (store Storage) Set(key string, val []byte, exp time.Duration) error {
+func (store *Storage) Set(key string, val []byte, exp time.Duration) error {
 	return nil
 }
 
 // Delete key by key
-func (store Storage) Delete(key string) error {
+func (store *Storage) Delete(key string) error {
 	return nil
 }
 
 // Clear all keys
-func (store Storage) Clear() error {
+func (store *Storage) Clear() error {
 	return nil
 }
diff --git a/postgres/postgres.go b/postgres/postgres.go
index 06008860..1d753a64 100644
--- a/postgres/postgres.go
+++ b/postgres/postgres.go
@@ -21,21 +21,21 @@ func New(config ...Config) Storage {
 }
 
 // Get value by key
-func (store Storage) Get(key string) ([]byte, error) {
+func (store *Storage) Get(key string) ([]byte, error) {
 	return []byte{}, nil
 }
 
 // Set key with value
-func (store Storage) Set(key string, val []byte, exp time.Duration) error {
+func (store *Storage) Set(key string, val []byte, exp time.Duration) error {
 	return nil
 }
 
 // Delete key by key
-func (store Storage) Delete(key string) error {
+func (store *Storage) Delete(key string) error {
 	return nil
 }
 
 // Clear all keys
-func (store Storage) Clear() error {
+func (store *Storage) Clear() error {
 	return nil
 }
diff --git a/redis/redis.go b/redis/redis.go
index 55d34794..a881ee79 100644
--- a/redis/redis.go
+++ b/redis/redis.go
@@ -58,7 +58,7 @@ func New(config ...Config) Storage {
 }
 
 // Get value by key
-func (store Storage) Get(key string) ([]byte, error) {
+func (store *Storage) Get(key string) ([]byte, error) {
 	val, err := store.db.Get(context.Background(), key).Bytes()
 	if err != nil {
 		if err != redis.Nil {
@@ -70,16 +70,16 @@ func (store Storage) Get(key string) ([]byte, error) {
 }
 
 // Set key with value
-func (store Storage) Set(key string, val []byte, exp time.Duration) error {
+func (store *Storage) Set(key string, val []byte, exp time.Duration) error {
 	return store.db.Set(context.Background(), key, val, exp).Err()
 }
 
 // Delete key by key
-func (store Storage) Delete(key string) error {
+func (store *Storage) Delete(key string) error {
 	return store.db.Del(context.Background(), key).Err()
 }
 
 // Clear all keys
-func (store Storage) Clear() error {
+func (store *Storage) Clear() error {
 	return store.db.FlushDB(context.Background()).Err()
 }
diff --git a/sqlite3/sqlite3.go b/sqlite3/sqlite3.go
index c2c433e5..f35e117b 100644
--- a/sqlite3/sqlite3.go
+++ b/sqlite3/sqlite3.go
@@ -21,21 +21,21 @@ func New(config ...Config) Storage {
 }
 
 // Get value by key
-func (store Storage) Get(key string) ([]byte, error) {
+func (store *Storage) Get(key string) ([]byte, error) {
 	return []byte{}, nil
 }
 
 // Set key with value
-func (store Storage) Set(key string, val []byte, exp time.Duration) error {
+func (store *Storage) Set(key string, val []byte, exp time.Duration) error {
 	return nil
 }
 
 // Delete key by key
-func (store Storage) Delete(key string) error {
+func (store *Storage) Delete(key string) error {
 	return nil
 }
 
 // Clear all keys
-func (store Storage) Clear() error {
+func (store *Storage) Clear() error {
 	return nil
 }