This is intended in the same friendly competitive spirit as Jeremy Ashkenas' demo yesterday (
https://news.ycombinator.com/item?id=9141321) - no disrespect intended to the Ember community, who are rightly proud of what looks like a terrific piece of work. I built this for my own curiosity in a few minutes, and felt compelled to share it when I saw the results.
More info here: https://github.com/rich-harris/ractive-dbmonster