Best approach for a scalable PHP (AJAX based) chat system

Posted by Simon on Stack Overflow See other posts from Stack Overflow or by Simon
Published on 2010-03-19T07:24:03Z Indexed on 2010/03/19 8:11 UTC
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php

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comet

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chat

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scalable

Hi,

I'm building a chat system for a company and I'm wondering as to what the best way to build the system would be?

The current setup we have is a Nginx HTTP Server with PHP and Memcacheq (as a message queue that appends the chat messages to the user's own queue). We then poll the Nginx server (through a Comet style request) and query the message queue for updates.

Is it a good idea to use a message queue such as Memcacheq to handle a chat system that has both user-to-user and site-wide chat or is it best to just stick to MySQL?

Thanks!

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