Memcached

Drupal Memcache Accessing caches from Slabs and Deleting using keys.

Memcached is an open source, distributed memory object caching system that alleviates database load to speed up dynamic Web applications. Memcached stores data according to a key. Data can be of various sizes so you can store small bits (like 1 record pulled from the database) or you can store huge chunks of data (like hundreds of records, or entire finished html pages).