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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: 2 Apache 1 Tomcat
Date Thu, 17 Dec 2009 21:37:06 GMT
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Fernando,

On 12/17/2009 7:42 AM, Fernando Monteiro Duarte wrote:
> Thanks Charles. Enabling 2 AJP Connector works fine.

I wonder if the problem was that 2 httpd instances were simply trying to
open too many connections to Tomcat. A single connector with more
threads allocated would probably have worked as well.

> But what is the best configuration? mod_proxy (HTTP protocol) or mod_jk (AJP
> protocol) anyone knows this?

This depends on your requirements. AJP needs to be used in certain
configurations (if you want request.isSecure to return the right value
if httpd is doing SSL termination, for instance, with some versions of
Tomcat). The HTTP protocol might be a bit easier to read if you need to
debug networking problems. AJP requires a separate tunnel if you want
secure communication, while HTTP can be trivially tunneled simply by
changing the protocol to HTTPS (and making sure you have all your certs
properly configured, etc.).

We have always used mod_jk for AJP on our projects, and since it's our
historic configuration, we stick with it. I definitely have a preference
for mod_jk over mod_proxy_ajp because of its higher flexibility of
configuration.

- -chris
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