Here is a webapp I wrote recently: http://lbconfig.appspot.com/ to solve the annoying problem of hand writing an optimized configuration for mod_jk setup, which for me, I do a lot. This is by no means feature complete, and I welcome suggestions, my email is on the site, but it is a good start, considering there isn't a tool out there that I know of to accomplish this.
I recently added mod_proxy config generation, it is very basic, the meat of the what is generated is in the explanation of the math behind the configuration, specifically when using the worker mpm. Comments and feature requests welcome, hope you guys can benefit from this :) -Samuel
