This is exciting. Thanks for contributing it.<br><br>Roger<br><br><div class="gmail_quote">2009/10/28 Piotr Sikora <span dir="ltr"><<a href="mailto:piotr.sikora@frickle.com">piotr.sikora@frickle.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hello,<br>
I'm proud to present a module, already mentioned on the list a few days ago by Grzegorz Nosek, that provides nginx with API to communicate with supervisord.<br>
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Initial release adds the ability to START and STOP backends (or any programs) on demand. If supervisord's [program:backend0] entry is configured with "startsecs" parameter, then supervisord (and ngx_supervisord) will wait that time before returning successful or failed status. This is of course done in asynchronous way, so it doesn't halt nginx for a moment.<br>
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This simple feature, combined with load-aware load balancers (like Grzegorz Nosek's nginx-upstream-fair) can offer very powerful features (starting first backend when the first request arrives, starting/stopping backends on demand, depending on the load, etc, etc). Patch for nginx-upstream-fair is included in the release and it shows how easy all of this can be achieved.<br>
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Current version allows only one module to "register" its monitors with ngx_supervisord, but as soon as there will be need for more (read: other modules will start using ngx_supervisord), this will be changed without any changes in the API.<br>
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If something is unclear, just ask.<br>
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This module was fully funded by <a href="http://megiteam.pl" target="_blank">megiteam.pl</a><br>
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For more information, API specification & download please visit:<br>
<a href="http://labs.frickle.com/nginx_ngx_supervisord/" target="_blank">http://labs.frickle.com/nginx_ngx_supervisord/</a><br>
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Best regards,<br><font color="#888888">
Piotr Sikora < <a href="mailto:piotr.sikora@frickle.com" target="_blank">piotr.sikora@frickle.com</a> ><br>
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