I have a website (with ESI) that uses Symfony2 reverse proxy for caching. Average response is around 100ms. I tried to install Varnish on server to try it out. I followed guide from Symfony cookbook step by step, deleted everything in cache folder, but http_cache folder was still created when I tried it out. So I figured I could try to comment out $kernel = new AppCache($kernel); from app.php. Tha