Htaccess Proxy

Lets say you have a web application bound to localhost. For example your ruby or python web project. The next logic step is to install nginx and setup a reverse proxy. If that's not an option and you need to use Apache and can not edit the Apache settings. There is a solution which I used for some time:

This assumes that your application run at port 886688.

RewriteEngine On
RewriteRule ^(.*) http://localhost:886688/$1 [P]

Probably not the best and cleanest solution but works for me!