I agree we should change the namespace, so it should be either CachingProxy or Invalidation, depending on whether we want to support additional features beside invalidating. We can control Varnish through the [CLI](https://www.varnish-cache.org/docs/3.0/reference/varnish-cli.html), which has some more options. I'm not sure yet whether we should add these options to our bundle or it makes more sense to just run the commands yourself without the bundle. What do you think?