Author here, I have used both Node and Ruby fairly extensibly. I think I touched upon Ruby&#x27;s performance issues in the post. That&#x27;s why I don&#x27;t consider Ruby a solid solution. Also, as far as I&#x27;m aware, Ruby doesn&#x27;t have built in concurrency like Go does. Yes, Nodejs is <i>close</i> to being concurrent, but it really doesn&#x27;t hold a candle to Go. Yes Node has socket.io, something I&#x27;ve used a lot and love. But Go has all of those features natively.