Node allows you to write JavaScript on the server, which is pretty awesome if you're interested in sharing code (validation, etc) on a client-heavy web app.
I don't have any experience with Go or Erlang, but Node's particular brand of asynchrony is all about non-blocking IO. There are no threads -- all instructions happen in one thread.
I don't have any experience with Go or Erlang, but Node's particular brand of asynchrony is all about non-blocking IO. There are no threads -- all instructions happen in one thread.