diff --git a/cache/redis/cache.go b/cache/redis/cache.go
index dccf31a..7294d67 100644
--- a/cache/redis/cache.go
+++ b/cache/redis/cache.go
@@ -17,7 +17,7 @@ const (
 )
 
 // buildKey 构建缓存键
-func (c *RedisClient) buildKey(prefix string, params ...interface{}) string {
+func (c *RedisClient) BuildKey(prefix string, params ...interface{}) string {
 	key := CacheKeyPrefix + prefix
 	for _, param := range params {
 		key += fmt.Sprintf(":%v", param)