cybozu/yrmcds — pull request #22 by ymmt2005 (2013-12-26 16:24:47+00:00)
Title: CAS in binary protocol should work everywhere

The protocol specifies CAS operations only for Set/Add/Replace, but
memcached implementation supports CAS for other commands as well.

https://groups.google.com/d/msg/memcached/eWs-mbyQuew/Kp7mgg6mclgJ