On: Fixing the callback spaghetti in node.js

[gregwebs]

Its not just potential - all the major Haskell web frameworks can handle more concurrent requests than node.js and scale to multi-core. http://www.yesodweb.com/blog/2011/03/preliminary-warp-cross-...

I don't think node.js is good enough because you have to deal with the issue being discussed here. In Haskell, as you said, you just write normal code with no worries about mutable state messing with your thread.