[RxJS] Reactive programming-sharing Network requests with Sharereplay ()

Currently we show three users in the list, it actually does three time network request, we can verfiy this by console out EA CH Network Request:

var responsestream = startuprequeststream.merge (requestonrefreshstream)  = = {    Console.log (' Do network request ');     return Rx.Observable.fromPromise (Jquery.getjson (requesturl)   );

We actually can use the same network request by Sharereplay (1):

var responsestream = startuprequeststream.merge (requestonrefreshstream)  = = {    Console.log (' Do network request ');     return Rx.Observable.fromPromise (Jquery.getjson (Requesturl));  })  . Sharereplay (  1);

Why replay one? Well, that's because if there happens to be a really late subscriber...let ' s say someone does a setTimeout and doesn ' t sub scribe to the responsestream after a long while. Let ' s say, three seconds or even seconds. Then, the this subscribe would get a replayed response JSON. It won't do-a new network request, but it'll simply replay that same JSON that happened before.

[RxJS] reactive programming-sharing network requests with Sharereplay ()