It's worth noting that some common web performance techniques also don't play well with caching. Take a look at http://stackoverflow.com/questions/4791807/data-uris-and-cac.... SPDY server push at least allows the resource to still be named (via its URL) so it can be cached and speed up page load times, although goodput may suffer due to unnecessary pushes. This is an area where there are active proposals: https://groups.google.com/d/topic/spdy-dev/TetVOinB-LM/discu....