Well, there’s no “caching = 1” setting but the configuration file is brimming with mentions of TTL and the bits I copied from elsewhere remove comments to make caching of static files better. It does cache. When I fire requests at it through ab none of those requests hits Apache so it is caching them. In testing with a logged out browser I think Apache served each request though. It does make a huge difference however and it was so easy to set up that everyone who has root on their own server should use it!