Create & Init Project...

app/interface/main/creative/dao/newcomer/redis.go

@@ -0,0 +1,43 @@
+package newcomer
+
+import (
+	"context"
+	"fmt"
+	"go-common/library/log"
+)
+
+const (
+	_preLock = "creative_task_"
+)
+
+func lockKey(key string) string {
+	return fmt.Sprintf("%s%s", _preLock, key)
+}
+
+//Lock .
+func (d *Dao) Lock(ctx context.Context, key string, ttl int) (gotLock bool, err error) {
+	var lockValue = "1"
+	conn := d.redis.Get(ctx)
+	defer conn.Close()
+	realKey := lockKey(key)
+	var res interface{}
+	//ttl 毫秒(PX)  NX 其实就是 SetNX功能
+	res, err = conn.Do("SET", realKey, lockValue, "PX", ttl, "NX")
+	if err != nil {
+		log.Error("receive_lock failed:%s:%s", realKey, err.Error())
+		return
+	}
+	if res != nil {
+		gotLock = true
+	}
+	return
+}
+
+//UnLock .
+func (d *Dao) UnLock(ctx context.Context, key string) (err error) {
+	realKey := lockKey(key)
+	conn := d.redis.Get(ctx)
+	defer conn.Close()
+	_, err = conn.Do("DEL", realKey)
+	return
+}