Kyle Kingsbury is a national treasure.<p>I'm essentially done having technical debates about why I don't particularly care for some more modern persistence solutions - I just point them at his blog. The time he has saved me from explaining why user accounts and hashed passwords shouldn't be held in Mongo or CouchDB is likely immeasurable.
A link directly to the video: <a href="https://www.youtube.com/watch?v=T5c81QJ-uRo" rel="nofollow">https://www.youtube.com/watch?v=T5c81QJ-uRo</a>
Great video, would be interesting to take some of his test failures like faking time, killing processes, and changing network cards, and integrating this in your integration tests for your applications.