That's actually pretty similar to how we do it, too: we precompile models, controllers, and most other relevant private libraries, then we deliver it on a JRuby

That's actually pretty similar to how we do it, too: we precompile models, controllers, and most other relevant private libraries, then we deliver it on a JRuby stack. It's actually quite slick and works pretty well, unless you have a ton of non-Java compiled gems to deal with. We've been able to get through that pretty well or find alternatives, although it looks like JRuby's looking to support those libraries in the near future, too, which is great. Makes JRuby quite an attractive platform for this type of stuff.