Save gzip and normal version

Hi!

FIrst of all, really GREAT work. Im using it with our js/css packer and it is working really great cause the URLs are hashed so I can store the requests on memcached forever and all automatically. With just memc module i was having to write the assets to memcached in the application backend and i did not like it.

In your TODO it is written Gzip. So i would like to see if it checks with what i would like:

Now im using Nginx Gzip Module to gzip css/js/html on the fly, after it comes from srcache or backend. If srcache could save a gzip version of the content it could be served directlly. What doesnt go in srcache would still be gzipped on the fly.

Not that it is necessary to save a not gzipped version to save IE6. You could even read the gzip_disable var.

Is that the way you are thinking?

Thx and keep the great work!

Start by reading the gzip item in the project's TODO and the srcache-nginx-module behavior described in this issue. Compare the requested cached gzip and normal representations with Nginx's gzip module and gzip_disable setting. Done should be defined as an agreed implementation and tests for serving the appropriate cached representation.