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From André Warnier>
Subject Re: Apache httpd reverse proxy setup
Date Wed, 07 Nov 2012 08:58:49 GMT
Marko Asplund wrote:
> Chris Schultz wrote:
>> On 10/31/12 3:55 PM, Marko Asplund wrote:
>>> There are at least 3 different approaches for configuring Apache
>>> httpd 2.2 to act as a reverse proxy for Tomcat 7.0:
>>> a) mod_proxy_http b) mod_proxy_ajp c) mod_jk
>>> ...
>>> What are the current differences and tradeoffs with using these
>>> alternatives?
>> I recently updated YMMV.
> Excellent, thanks!
> I think this will be very useful information for people trying to decide
> between these options.
>>> Quite a few writers appear recommend mod_jk if performance and HA
>>> features are critical. But Apache 2.2 mod_proxy supports some load
>>> balancing and failover features through mod_proxy_balancer.
>> mod_jk also supports lb and failover; just configured differently.
> On different web resources an oft-cited advantage of mod_jk appeared to be
> its lb and failover features, which was why I thought I'd mention mod_proxy
> providing similar features.
>>> Also, mod_cache can be used to offload static resource serving from
>>> the back-end to provide something similar to JkMount.
>> I suppose you are saying that they can be configured equivalently?
> Yes, exactly.
> Both provide a feature that allows you to serve static content without
> invoking the backend.
> This is achieved through mod_cache when using mod_proxy and with
> the JkMount configuration parameter when using mod_jk by.
What about all the "fine" features of mod_jk ? (such as cping/cpong, timeouts, retries, 
etc.).  I do not see any of this mentioned in the on-line mod_proxy_ajp documentation.
Is it that these settings are not available with mod_proxy_ajp, or simply that the 
documentation is incomplete ?

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