diff --git a/core/candle.go b/core/candle.go
index 68f0192..37bc8b1 100644
--- a/core/candle.go
+++ b/core/candle.go
@@ -267,9 +267,9 @@ func (mx *MaX) SetToKey() ([]interface{}, error) {
 // 保证同一个 period, keyName ，在一个周期里，SaveToSortSet只会被执行一次
 func (core *Core) SaveUniKey(period string, keyName string, extt time.Duration, tsi int64, cl *Candle) {
 	refName := keyName + "|refer"
-	refRes, _ := core.RedisCli.GetSet(refName, 1).Result()
+	refRes, err := core.RedisCli.GetSet(refName, 1).Result()
 	core.RedisCli.Expire(refName, extt)
-	if len(refRes) != 0 {
+	if len(refRes) != 0 || err != nil {
 		return
 	}
 	cl.ToStruct(core)
@@ -278,7 +278,7 @@ func (core *Core) SaveUniKey(period string, keyName string, extt time.Duration,
 		Content: cd,
 		Tag:     "sardine.log.candle." + cl.Period,
 	}
-	err := wg.Process(core)
+	err = wg.Process(core)
 	if err != nil {
 		fmt.Println("writeLog err:", err)
 	}