In order to maximize performance of Drupal, we need to understand Drupal's execution and caching model.
Enabling an Opcode Cache is an easy and effective way to improve performance of PHP execution.
A well tuned reverse proxy cache, sometimes also referred to as a "web accelerator", can dramatically increase a websites performance. Squid
Squid is a fully-featured, open-source web-content caching system. In accelerator mode, squid can be used in between your users and your
Varnish Cache is a modern reverse proxy cache software package. It has been built from the ground up to be a dedicated reverse proxy cache
The VCL snipets below are based on a Varnish 2.0.x example configuration from this blogpost by Caleb G
In November of 2010 Google released an Apache module named mod_pagespeed. This is a server side module for Apache designed to manage caching
Drupal creates pages and serves them to clients. The completed pages are also stored in the cache_page table of the database -- referred to