I don't know how to formally state this question as i don't know what is actually happening here. Whenever any user comments on my post, facebook makes a request like below to display that comment without me doing anything.How do they do it?
https://0-edge-chat.facebook.com/pull?channel=p_100009456028304
This cannot be push notification as they are are making a pull request constantly(i checked using developer tools available in browsers, although i
am not sure about if it is push notification or not).They are constantly making a pull request to above URL.What this technology is called?
Can someone please help me understand this.
Maybe this question is duplicate and already answered on stack overflow.But
as i don't what this is, it's hard to search.(i tried but couldn't find anything)