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From Jess Holle <je...@ptc.com>
Subject [users@httpd] Re: mod_proxy_balancer unbalancing?
Date Fri, 10 Apr 2009 17:38:05 GMT
P.S. I'm using the by-requests balancing algorithm.  Perhaps I shouldn't be?

Jess Holle wrote:
> Has anyone seen mod_proxy_balancer (in 2.2.11 with mod_proxy_ajp) 
> becoming unbalanced in usage?
>
> In testing we've seen it balance fine for a minutes/hours and then 
> seemingly forget about one of the workers -- sending all session-less 
> requests to another worker (we only have 2 live workers and multiple 
> "dead" workers in the balancer set).
>
> Later I see requests going to the forgotten worker again and I see 
> nothing (with LogLevel set to debug) to denote that Apache ever found 
> the worker unresponsive and thus put it in an error state.
>
> Clearly I have more debugging ahead of me, but I just thought I'd 
> check to see if such an issue has already surfaced.
>
> -- 
> Jess Holle
>
> P.S. Yes, I could try mod_jk instead, but mod_jk lacks one critical 
> capability -- the ability to throttle requests by queuing them up in 
> Apache rather than simply returning a 503 when the AJP workers are 
> max'ed out.

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