Varnish Cache is a web application accelerator also known as a caching HTTP reverse proxy. You install it in front of any server that speaks HTTP and configure it to cache the contents. Varnish Cache is really, really fast. It typically speeds up delivery with a factor of 300 - 1000x, depending on your architecture.
Download or subscribe to this show at https://twit.tv/shows/floss-weekly
Think your open source project should be on FLOSS Weekly? Email Randal at firstname.lastname@example.org