分佈式K/V存儲方案 Cassandra
http://cassandra.apache.org/
key-value 存儲服務器 Riak
http://docs.basho.com/
MySQL/Galera
http://www.iteye.com/news/23784
OpenStack Object Storage (Swift)
https://github.com/openstack/swift
https://launchpad.net/swift