Memcached是高性能的，分布式的内存对象缓存系统，用于在动态应用中减少数据库负载，提升访问速度。Memcached由Danga Interactive开发，用于提升LiveJournal.com访问速度的。LJ每秒动态页面访问量几千次，用户700万。Memcached将数据库负载大幅度降低，更好的分配资源，更快速访问。-Memcached is a high-performance, distributed memory object caching system, used in dynamic applications to reduce the database load and enhance speed of access. By Danga Interactive developed memcached to enhance the speed of LiveJournal.com visit. LJ dynamic page views per second, thousands of times a user 7000000. Memcached will significantly reduce the database load, and better allocation of resources, more rapid access.