Can you explain reverse Ajax and do you consider it technology that can be used in something beyond trial or fringe applications?

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Reverse Ajax is basically a way for servers to send Ajax-based information to browsers. Because browsers don't expect information from servers without having made a request, you can either do this with polling, by holding open an HTTP connection, or by sending more information with a response than the browser requested. In other words, reverse Ajax equals regular Ajax plus one or another stupid HTTP trick we used to use back in the Web 1.0 days.

This was first published in June 2008

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