How to implement Comet in database side?

Posted by Morgan Cheng on Server Fault See other posts from Server Fault or by Morgan Cheng
Published on 2010-03-17T05:09:15Z Indexed on 2010/03/17 5:11 UTC
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comet

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database

I have been searched for this question for a long time. How to implement Comet in database side?

To support Comet, we'd better have a web server stack that supports asynchronous operation. So, Apache is not a option. There are some open source web server such as tornado can do asynchronous http handling. This is in web server level.

In database level, how to make web server know that some event happens in database? There should be a asynchronous way to let web server know that something updated in database. Polling is not a option.

Is there any example available?

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