Stackers, I have found there are two parts can set memcache in keystone.conf of Juno release. I am not quite sure if they are duplicated or any difference? Thanks. [token] driver = keystone.token.backends.memcache.Token caching = True [cache] enabled = True backend = dogpile.cache.memcached backend_argument = url:localhost:11211 Best Regards -- Ray -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20150414/4c6c3a1c/attachment.html>