With the Varnish caching proxy you can make slow websites blazingly fast. The basics are quite simple once you understand how the cache handling in HTTP works. For starters, we will look into HTTP and the varnish configuration. The main course is going to be cache invalidation and the cache tagging strategy. For desserts, there will be an introduction to edge side includes (ESI). All liberally sprinkled with examples from the FOSHttpCacheBundle for Symfony2.
Speak by david from liip (@dbu)