Reverse Proxy Check

Reverse Proxy Check is a simple module that adds a check to the Status Report to show whether or not the home page of your site is being served by a reverse proxy cache server for anonymous users.

The goal of this module is to provide a quick way to check after code pushes that nothing has caused any problems with reverse proxy caching.

This module looks for the "cache-control" header and inspects the "max-age" parameter to determine whether the cache is working and configured correctly. It currently supports Varnish, but I welcome patches for other cache systems.

Initial development was graciously sponsored by Vertical Spin.