Note: I am hosting a BoF at DrupalCon London about this: Join us in Room 333 on Thursday 25th August from 11:00 - 12:00 (second half).

Introduction

Varnish is a fast, really fast reverse-proxy and a dream for every web developer. It transparently caches images, CSS / Javascript files and content pages, and delivers them blazingly fast without much CPU usage. On the other hand Apache - the most widely used webserver for providing web pages - can be a real bottleneck and take much from the CPU even for just serving static HTML pages.

So that