10 Varnish Cache mistakes and how to avoid them

Varnish Cache is one of the world’s most popular HTTP caching solutions. Like any piece of critical web content delivery software, it pays to know some fundamentals and have a few tricks up your...

By Espen Braastad 21 / 08 / 2014

CDNs and Varnish Plus - Per Buer talks shop with Bizety

Bizety has just finished another Q&A session with Per Buer, founder of Varnish Software. ...

By Scott Kircher 18 / 08 / 2014

Varnish Enhanced Cache Invalidation is here

To help ensure our customers and fans continue to discover the right products for the right job, we’ve made a few changes. The product formerly known as Varnish Hashninja will hereby be known as...

By Scott Kircher 01 / 08 / 2014

Partitioning your Varnish Cache

If you have multiple virtual hosts being handled by the same server you some times want some sort of QoS to apply to your caching. You might want to reserve a certain amount of memory for each...

By Per Buer 25 / 06 / 2014

Notes from the last Varnish Developer Day

Once every quarter there is a VDD - Varnish Developer Day. We typically gather between 8-16 people that are interested in Varnish development and discuss where we are and where we wanna go. 

By Per Buer 24 / 06 / 2014

Adding headers to gain insight into VCL

Varnish logs a lot. Sometimes it is a bit too much and verifying that your VCL works the way it is supposed to can be a bit of a bother, especially on a busy server. The new...

By Per Buer 23 / 06 / 2014

Grace in Varnish 4 - Stale-while-revalidate semantics in Varnish

Grace mode has since its inception in Varnish 2.1 been a key feature in Varnish. Initially a feature to mitigate thread pile-ups and the resulting thundering herd was soon adopted to other uses,...

By Per Buer 20 / 06 / 2014