Real quick: I wrote a little json-in-json-out app for working on webapps before the backend is done (first node (express)). Then, later rewrote it in clojure (compojure). They're both on heroku and perform about the same. This is by no means a real benchmark, but does show that node can keep up with the JVM for ridiculously simple apps.
Also, ClojureScript is super interesting because a lot of clojure libraries will work (provided they're not a Java wrapper library) automatically. Draw backs though? Speed. ClojureScript uses Google Closure to optimize, which brings it close to pure JS speeds, but according to Conrad Barski, the webfui creator, it's not quite there. Check out his presentation though here if you're interested (demos and speed explanations included): http://www.youtube.com/watch?v=HeI5-D7SQe8
CRAP: Should have replied to parent comment, but it's fine here as well.
Node version: http://json-mirror.herokuapp.com/ Clojure version: http://mirror-clojure.herokuapp.com/
Also, ClojureScript is super interesting because a lot of clojure libraries will work (provided they're not a Java wrapper library) automatically. Draw backs though? Speed. ClojureScript uses Google Closure to optimize, which brings it close to pure JS speeds, but according to Conrad Barski, the webfui creator, it's not quite there. Check out his presentation though here if you're interested (demos and speed explanations included): http://www.youtube.com/watch?v=HeI5-D7SQe8
CRAP: Should have replied to parent comment, but it's fine here as well.