Memcached

Memcached is a distributed memory object caching platform, which is used to accelerate the loading speed of database-driven sites by caching the calls and the responses between the visitor and the server. To put it in simple terms, every time a particular web page on such a site is opened, the script calls its database to fetch the information that should be shown to the website visitor. If the latter clicks on a hyperlink to open another page, the entire operation is performed again and this generates numerous database calls and excessive server load, particularly if the website has lots of simultaneous visitors. Memcached "memorizes" this information exchange, so if any of these pages is opened again, the script no longer needs to cull any info from the database, since everything is provided by the caching platform. In this way, the overall loading speed of your website will increase and you will enjoy more satisfied visitors and they’ll be able to browse your website much faster. Additionally, Memcached updates its cache when any info in the database is altered, so the website users will never wind up seeing outdated content.