Product: Memcached

Memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

Danga Interactive developed memcached to enhance the speed of LiveJournal.com, a site which was already doing 20 million+ dynamic page views per day for 1 million users with a bunch of webservers and a bunch of database servers. memcached dropped the database load to almost nothing, yielding faster page load times for users, better resource utilization, and faster access to the databases on a memcache miss.

Comments

[Ido]

Any good source to deal with issues with 'expiration time' that does NOT match the setting you use?
For example, we setting 512 items to the cache for 30min and after 10-15sec. they are all gone... (and yes - there are lots of room in the memory of the memcached process...).
Thanks.

[Sameer Shah]

Memcached provides very limited set of features when it comes to distributed caching. With cache clients handling all distribution logic with dumb cache servers, it limits features like data replication, scalability, dynamic clustering and auto failover etc.
A distributed caching solution in data critical environment must include replication and failover features to ensure robustness and data integrity. E.g. NCache () a .Net based distributed caching solution by Alachisoft provides intelligent cache servers with multiple caching topologies to ensure such features. NCache provides linear scalability and data replication features along with a rich set of features including dependencies, expiration and query language to satisfy application's caching needs.