In my web application backend update from several clients. so when backend updates each update should appear on each client. So how i can update client web browser when backend update? I am using jboss, jsf and spring framework. Please give me idea how i can implement my scenario. Thanks in Advance
Software Engineer(BSC):SCJP 1.5
(Knowledge is power when applied)
I have found following solutions up to now, that your frontend is a (generally) stateless HTML page of some sort. Something in a browser. If you want all clients to be pushed changes automatically, you have three options:
Comet is essentially making AJAX requests that have no request timeout limit. You make the request, and it sits there and streams data through it as is neccessary. This can be done with hidden iFrames or standard XMLHTTPRequests (which jQuery can wrap for you). You can read more about this method here.
Using any type of Event-Based backend (Twisted, EventMachine, node.js, etc) makes WebSockets the ideal solution. Simply have all clients register with the backend, and upon a submit from any given client, push the changes to all other clients. You can read more (and see a nice example) of WebSockets on this page.