Guillaume Quintard

Guillaume Quintard

Director of Technical Enterprise accounts at Varnish Software

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...

novcl: an alternative to VCL

If you've read a few of my blog posts, you probably already know I love the VCL (Varnish Configuration Language) idea,...

Howto: Respond to probes

Two years ago, I wrote an article about how probes work in Varnish (it's a great article - fun, informative... go read...