Varnish for ATLAS
Varnish is a reverse http proxy. It is meant to cache accesses to one application/server. For this purpose it is sufficient to use RAM for caching.
We support use of Varnish for Frontier accesses and for CVMFS accesses. Being a reverse proxy, it can't serve both from a single instance. Instructions and code for the Frontier accesses can be found in branch frontier, while instructions for CVMFS accesses are in cvmfs.