Guillaume Quintard

Guillaume Quintard

Director of Technical Enterprise accounts at Varnish Software

Understanding Varnish logging and log management

One aspect of Varnish that customers and enthusiasts most often ask questions about is how to make more effective use...

The difference between Hit-for-Miss and Hit-for-Pass

A few weeks ago, I wrote and post introducing the concept of Hit-for-Miss and I received a few questions about it...

Hit-for-Miss AND why a NULL TTL is bad for you

Varnish is a caching server, and a great one at that, that much we already know. But what about the content you don't...

Request coalescing and other reasons to use Varnish as origin shield

The single most frequent question I get from people discovering Varnish is "Do you support request collapsing?". And I...

The best way to completely purge a Varnish cache

It's cargo-cult fighting time! Today, we are going to look at a ban expression that you probably have used, and maybe...

Web Application Firewall in the Varnish mainline

As you probably know, Varnish has always been a very secure piece of software but so far, that safety only applied to...