- move Cacher from globals to api

- vendorPromotionID for CreatePromotion
- LockPromotionSkus

business/jxutils/cache/redis/redis.go

@@ -25,8 +25,19 @@ func New(host string, port int, password string) *Cacher {
 	}
 }
 
-func (c *Cacher) FlushAll() error {
-	return c.client.FlushAll().Err()
+func (c *Cacher) FlushKeys(prefix string) (err error) {
+	if prefix == "" {
+		return c.client.FlushAll().Err()
+	}
+	keys, err := c.Keys(prefix)
+	if err == nil {
+		for _, key := range keys {
+			if err = c.Del(key); err != nil {
+				break
+			}
+		}
+	}
+	return err
 }
 
 func (c *Cacher) Set(key string, value interface{}, expiration time.Duration) error {
@@ -58,3 +69,7 @@ func (c *Cacher) GetAs(key string, ptr interface{}) error {
 	}
 	return err
 }
+
+func (c *Cacher) Keys(prefix string) ([]string, error) {
+	return c.client.Keys(prefix + "*").Result()
+}