Caching in Drupal 7: Varnish, APC, and Memcache
Posted: Sat, 04/14/2012 - 12:42pm by Rich
One of the things that I really like about Drupal 7 is how much easier it is to set up caching than in Drupal 6. It was as simple as installing Varnish, APC, and Memcache on my server, installing a few Drupal modules for my site, and updating my Drupal site's settings.php file.
Varnish