setInterval是获取通知的正确方法吗？

Question

i need to create a messages notifications in my system built by yii2 ,

so i used this way

1- i created in messages Controller function getnew :

public function actionGetnew()  
{
     $query1 = new Query;                              
      $query1->select([" count(*) as  price "]   )
              ->from('messeges');
              //->where // here   i will add the id of user that logged in and the state of unread messages ! 
     $command1 = $query1->createCommand();
     $price = $command1->queryAll();  
     echo Json::encode($price); 
}

2- i created a js file :

window.onload = function() {

   setInterval(function(){ 
    $.get('index.php?r=messeges/getnew',function(data)
    {
        var data=$.parseJSON(data);

        $(".messages").html(data[0].price);
    });
 }, 5000);
};

3- i added HTML tag like this :

  <h6 class="messages"></h6>

everything work fine but my question is that right way to do it ? , is that will add more traffic and load on my server ? if there is a better idea please notify me !

Answer 1

It isn't best way to do this.

You are right - it could cause traffic and load increase.

Better options are:

1. Longpooling

2. Server events

3. WebSockets

First of all try to consider socket.io (they have some problems with website - try to go on it later :-) )