memcached是一套分布式的快取系统，当初是Danga Interactive为了LiveJournal所发展的，但目前被许多软件（如MediaWiki）所使用。这是一套开放源代码软件，以BSD license授权释出。
2012-09-03发布1.4.15.上一个版本是2012-07-31的1.4.14 下载地址： http://memcached.googlecode.com/files/memcached-1.4.15.tar.gz
此版本增强了多线程下的读写性能。
完全改进：
Fixes
Add some mild thread documentation
README.md was missing from dist tarball
Issue 286 : --disable-coverage drops "-pthread" option
Reduce odds of getting OOM errors in some odd cases
New Features
Thread scalability is much improved for reads, and somewhat improved for writes. In a pure read-only situation on a dual socket six core NUMA machine I've tested key fetch rates around 13.6 million keys per second.
More tuning is necessary and you'd get significant lag at that rate, but that shows the theoretical limit of the locks.
主页：http://memcached.org/
下载：http://code.google.com/p/memcached/downloads/list
来自:开源中国社区
