Memcached is a high-performance, distributed memory object caching system. I had implemented this in some of my projects. Memcached increases application perfomance by caching data in memory.

Memcached server instances listens on a user-defined IP and port.

PHP provides support for the Memcache functions through a PECL extension.

To install the module command is:

pecl install memcache

For detail information on Memcached, please visit Danga Memcached.