Blog Archive


I like to write. Here's a collection of my blogposts.

Chalk Talk #3: how to optimise your content for Varnish


Upcoming presentation at LOADays: Varnish Internals – Speeding up a site x100


Chalk Talk #2: how does Varnish work?


Varnish: same hash, different results? Check the Vary header!


Varnishlog: show the hash() data in output


Chalk Talk #1: An introduction to Varnish


Varnish 6.0 released


Podcast: Caching using Varnish


Varnish 5.x VCL configuration templates


Varnish Explained


Varnish Cache 5.0 Released


Mark a varnish backend as healthy, sick or automatic via CLI


Varnish Agent: an HTML frontend to manage & monitor your varnish installation


Drupal’s itok parameters explained and a Varnish workaround for different backends


Varnish VCL Syntax Highlighting in Sublime Text


Varnish VCL: Case Insensitive Regex


Varnish Cache 3.0 Is End Of Life


Running Varnish 4.x on systemd


Debug Varnish 4.x on systemd That Fails to Start


Explicitly Approving (Whitelisting) Cookies in Varnish With Libvmod-Cookie


Varnish FetchError http first read error: -1 11 (Resource temporarily unavailable)


Roundup: Belgacom Hack, Defcon, Varnish, HTTPs, Chrome and PHP


Reload Varnish VCL without losing cache data


Combine Apache’s HTTP authentication with X-Forwarded-For IP whitelisting in Varnish


Varnish tip: see which cookies are being stripped in your VCL