This document discusses how to use Memcache to reduce database load in Drupal. It begins by explaining what Memcache is - an in-memory key-value data store that stores data in RAM for faster access. It then covers why Memcache is needed to improve performance, how to install Memcache and the Memcache module for Drupal, and how to configure settings.php to use Memcache as the default cache storage in Drupal. The document concludes with some merits and demerits of using Memcache.