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From Sven Helmberger <>
Subject Re: Use couchdb as the data store for real-time chat room
Date Sat, 14 Mar 2009 12:20:34 GMT
howard chen wrote:
> Hi all,
> Currently we have a quite large scale online chat-room, using MySQL /
> Memcached for data store. Chat room message is refreshed every 2 - 10
> sec (adaptive, depends on "chat rate", using Ajax).

Does that mean you use AJAX polling with a user configurable interval of 
2 to 10 seconds to drive the chat?

This sounds like it could be the main performance problem. I would 
expect some form of COMET or even the long request pattern to improve 
your performance.

Sven Helmberger

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