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Varnish

Explaining Varnish for Beginners

A short time ago I published a presentation I gave at DrupalACT entitled 'Varnish for Beginners'. Whilst the presentation itself went down well and those attending hopefully garnered a good amount of knowledge, I thought I'd share the basics in this blog post for those who would like to know more about it.

What is Varnish?

When and how caching can save your site. Part 2: authenticated users

On my last blog post we looked to what Drupal achieves out of the box regarding Drupal caching. We understood how Drupal can cache pages for anonymous users and found solutions to avoid to bootstrap Drupal to serve a cached page (using a reverse proxy like Varnish or redirecting requests using Boost). We also saw that even if any of these tools is used, Drupal is also able to save cached versions of pages in the database. However, Drupal allows to plug transparently other caching backends that are faster:

Why Varnish Rocks (and details on Boston training)

We are big fans of Varnish Cache, the incredibly fast and flexible open-source, caching software. Varnish delivers a significant fraction of the content for our Acquia Hosting and Drupal Gardens users.