Nice! This supports the usual war file formats... which most likely means it can support running JRuby/Rails & Clojure/Compojure. The one thing that does is

Nice! This supports the usual war file formats... which most likely means it can support running JRuby/Rails & Clojure/Compojure. The one thing that does is slightly annoying: you can't create threads, no executor pools, etc. You can do scheduled jobs, but no background ones.