Get count every X second loading more than 1 billion XHR request

user_7453565 0
Viewed 89

I use setInterval to get my notification counter every 5 second, I thinks it's bad idea to getting those results. because if you stay on my site for a while you got a billion times of loading XHR loading.
And if you use the facebook, you don't get lot of XHR.

Here is my web site capture XHR: enter image description here

My Code in file: notification.php:

function getnotificount(){
$.post('getnotificount.php', function(data) {
        $('#notifi_count').html(data); 
    });
}

setInterval(function(){
     getnotificount();
}, 5000);
jquery ajax javascript
3 Answers

Your code is ok. It is not 'loading more than 1 billion XHR request', it's starting (and finishing - as we can see) a request every X seconds and there's nothing wrong with that.

However it's not the best way to implement a push notification system. That would be websockets, which is a way for your client to 'listen' to messages from your server. There are frameworks for this, the most popular one (and the one that I recommend) being socket.io.

Your third and most advanced/modern solution would be implementing a service-worker-based notification system but I'm pretty sure that's way too complex and not suitable for you since you can't even understand your problem enough to describe it.

user_38184630

What you are doing is polling, which is making a new request to the server on a regular bases. For a http request, a TCP connection is opened, request / response are exchanged and the TCP connection closed. This is what happens every 5s in your case.

If you want a more light weight solution, have a look at websockets such as socket.io. Only one TCP connection is opened and maintained between the front and the back. This bidirectional conection enables the back to notify the front when something happens.

user_63258220

It is not a bad idea at all. It is called polling and it is used at many places as a means to get regularly data from the server. However, it is not the best, nor the most modern solution to do this. In fact, if your server supports WebSockets, then you should use them. You do not need to use NodeJS to use WebSockets, since WebSocket is a protocol of creating a duplex channel of communication between your server and the client. You should read about WebSockets. Also, you can use push notification, which is inferior to WebSockets in my opinion. And a hacky way is to use a forever frame.

user_4365600
Related