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Editorial Team
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Asked: 2026-05-22T16:03:47+00:00

I’ve noticed on a lot of applications recently, such as Google Docs and Facebook,

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I’ve noticed on a lot of applications recently, such as Google Docs and Facebook, that JavaScript is being used to load a file which doesn’t load until the website needs to send you a notification.

Essentially, they’re using an HTTP request to a file, and then the server which handles the file doesn’t respond to the request (or may respond but not send the content) until the server wants to send a notification (such as a new IM or a document update) to the user.

I haven’t been able to find much on the web about the best practices for doing this. It seems to be a relatively new technique.

I’m looking into doing this myself and would like to read more on it. Does this have a name? Are there established best practices for doing this?

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1 Answer

  1. Editorial Team

    You could start reading about Comet technology. And here is a good Comet Server, APE: Ajax Push Engine

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