Easily validating your Varnish cache VCL file and other quick tips

This specific content was written 14 years ago. Please keep this in mind as it may be outdated and not adhering to best-practices.

I’ve been playing around with varnish lately and had to make a change in a VLC file to perform URL re-writing before following with “hashing”, lookup, and if necessary forwarding to tomcat.
For anyone wanting further information on the varnish pipeline, as well as why someone should use varnish I recommend the following two articles:

1) http://open.blogs.nytimes.com/2010/09/15/using-varnish-so-news-doesnt-break-your-server/?smid=tw-share
2) https://www.varnish-software.com/static/book/VCL_Basics.html