While I've experienced some of the same issues as the author, and came to the same conclusion (that we couldn't use Redis in VM mode in production), the subject line is unfairly alarmist.<p>We are using Redis in production (we had to adapt our usage patterns to the demands of an in-memory database, rather than relying on VM to give us unlimited storage) and I would recommend it.<p>"Considered harmful" is not warranted here: see <a href="http://meyerweb.com/eric/comment/chech.html" rel="nofollow">http://meyerweb.com/eric/comment/chech.html</a>