title: Caching of static assets in Symfony
body: <p>I came across an issue with a Symfony2 page. There appears to be some sort of not-client-side caching of static assets, eg. a zip file going on. For a few hours after updating the page the old file is downloaded and then it suddenly updates. I strongly suspect this may have something to do with the server or some proxy configuration so I doubt this has anything to do with Symfony itself as it would make little sense, but just as a sanity check - does S2 cache such files as well? </p>