diff --git a/cache.go b/cache.go
index 8893565..f66e7e7 100644
--- a/cache.go
+++ b/cache.go
@@ -11,4 +11,5 @@ const (
 	CacheDriverRedis     = "redis"     // redis缓存驱动
 	CacheDriverGocache   = "gocache"   // gocache缓存驱动
 	CacheDriverMemcached = "memcached" // memcache缓存驱动
+	CacherDriverNull     = "null"      // 禁用缓存
 )