A Brief Description , Now a days lots of websites like Wikipedia, Twitter, Youtube, Digg are using an open source, high-performance, distributed memory object caching system called Memcache or Memcached. Basically it provides a caching mechanism in the server side scripting. Here we are going to use it for PHP. From there website it's quite understandable that the distribution is mainly built for Linux environment. But lot of people are very much comfortable using the Windows environment.