update tencentid redis

app/Traits/TencentIm.php

@@ -54,9 +54,9 @@ trait TencentIm
      */
     public function getUserSig(string $identifier): string
     {
-//        if (RedisService::redis()->exists('tencentIm:userSign:' . $identifier)) {
-//            return RedisService::redis()->get('tencentIm:userSign:' . $identifier);
-//        }
+        if (RedisService::redis()->exists('tencentIm:userSign:' . $identifier)) {
+            return RedisService::redis()->get('tencentIm:userSign:' . $identifier);
+        }
 
         $userSig = self::generateUserSig($identifier);