public function onUpdate()
 {
     $mem = new \Jamm\Memory\RedisObject('messages');
     $messages = $mem->read(self::MSG_CONTAINER);
     if (!empty($messages)) {
         $newMessages = [];
         foreach ($messages as $msg) {
             if (!array_key_exists($msg->userId, $this->users)) {
                 $newMessages[] = $msg;
                 continue;
             }
             foreach ($this->users[$msg->userId] as $user) {
                 if ($user[self::CLIENT_KEY]->getSocket()->isConnected()) {
                     $user[self::CLIENT_KEY]->send(json_encode($msg->toArray()));
                 }
             }
         }
         $mem->del(self::MSG_CONTAINER);
         $mem->save(self::MSG_CONTAINER, $newMessages);
     }
 }