Update news feed via ajax?

Question

JavaScript

There is a news feed in which users can post various news. Is it possible to make it so that when a user adds news, other users viewing the feed will have this news added via Ajax? I have no idea which way to go. I write in php and use jquery.

Answer 1

Try reloading news from api.jquery.com/jQuery.ajax/ and www.w3schools.com/js/js_timing.asp.
For example:
function refresh_func()
{
$.ajax(...).
success(function(){
...
});
}
setTimeout("refresh_func();", 10000);


Answer 2

Dig by Comet keywords
For example: dklab.ru/lib/dklab_realplexor/
rutvit.ru/ - an example of a project

Answer 3

In theory, websocket was created for this, but in my opinion it really works only in flash, and in most browsers support was removed by default.
There is another option to make a timer and use Ajax to request updates from the server once in a while, but such a thing with a large number of clients will turn them into a botnet that will lay down your site.
You can play around with keepalive connections, but I have little idea how to make such functionality off the counter on them.

Answer 4

as an option, they suggested using a comet server or websockets.
The very idea of ​​comet technology извратis a gag of the imperfection of the HTTP protocol. But it works and can be applied.
There is a problem with websockets, as they are not stable. They found a hole in the implementation of the websocket protocol, and made a fuss, as a result of which most web browser manufacturers temporarily removed them. Not all servers support websockets.