Please read for an updated status on RailsCasts:
Learn more or hide this
GitHub User: backwardm
A quick reminder about older versions of Redis' default security settings... be sure to secure your Redis server from outside access. (bind to localhost and set up AUTH as default installs were accessible from the outside).
See: http://redis.io/topics/security and http://antirez.com/news/96
Two things to make sure:
Hope that helps.
Oh, also su to your "deployer" user and run the magical "rbenv rehash" command? Dunno, just a thought.