browser instant updates with ajax/jquery

Posted by wcpro on Stack Overflow See other posts from Stack Overflow or by wcpro
Published on 2010-04-21T04:47:42Z Indexed on 2010/04/21 4:53 UTC
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AJAX

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facebook

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observer

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JavaScript

I'm trying to reverse engineer how facebook handles their notifications, where when you get a message you get instantly notified via the browser.

I've fiddled with it for a little bit and realized that there is always a pending GET request "listening" if you will to some sort of update from the server. This appears to be some sort of observer pattern. I was just wondering if this pattern was documented somewhere.

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