diff --git a/connom.go b/connom.go
index d566bb4..f1d0f64 100644
--- a/connom.go
+++ b/connom.go
@@ -2,7 +2,7 @@ package gocache
 
 import "time"
 
-const Version = "1.0.2"
+const Version = "1.0.3"
 
 var (
 	DefaultExpiration = time.Minute * 30 // 默认过期时间
diff --git a/go.mod b/go.mod
index a32e183..d4bc07b 100644
--- a/go.mod
+++ b/go.mod
@@ -4,13 +4,13 @@ go 1.18
 
 require (
 	github.com/allegro/bigcache/v3 v3.0.2
+	github.com/bradfitz/gomemcache v0.0.0-20220106215444-fb4bf637b56d
 	github.com/dgraph-io/ristretto v0.1.0
 	github.com/go-redis/redis/v8 v8.11.5
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 )
 
 require (
-	github.com/bradfitz/gomemcache v0.0.0-20220106215444-fb4bf637b56d // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
diff --git a/redis_cache.go b/redis_cache.go
index 3dca8a9..bc3e24a 100644
--- a/redis_cache.go
+++ b/redis_cache.go
@@ -13,11 +13,16 @@ type RedisCache struct {
 	GetterInterface GttInterfaceFunc // 不存在的操作
 }
 
-// NewCache 返回Redis缓存实例
+// NewCache 实例化
 func (r *Redis) NewCache(expiration time.Duration) *RedisCache {
 	return &RedisCache{db: r, expiration: expiration}
 }
 
+// NewCacheDefaultExpiration 实例化
+func (r *Redis) NewCacheDefaultExpiration() *RedisCache {
+	return &RedisCache{db: r, expiration: r.expiration}
+}
+
 // GetString 缓存操作
 func (rc *RedisCache) GetString(key string) (ret string) {