At Typewire we too started on Node and moved to Java (using Netty for NIO). I really truly love JS and wanted it to work, but the throughput on Node for open co

At Typewire we too started on Node and moved to Java (using Netty for NIO). I really truly love JS and wanted it to work, but the throughput on Node for open connections just wasn't where we needed it to be. The best use case I can come up with is using node, socket.io, and knockout to quickly build a shared-state application (so long as there is a way to reconcile communication latency, which is why a declarative library like knockout is a good thing). I'm trying to come up with a good problem to solve with that tech stack for this year's Node Knockout. In short, I agree, Node lends itself nicely to a particular subset of problems, but a lot of the places where it is presumed to shine (speed/real-time/code reuse) others are moving in to follow its lead.