"deliver performance" is too abstract. I usually throw varnish in front of my ruby apps to get performance. I find this gives me a more productive programming e

"deliver performance" is too abstract. I usually throw varnish in front of my ruby apps to get performance. I find this gives me a more productive programming environment (ruby), and insane performance. Node only becomes useful for me when I need to keep a lot of connections open and handle them simultaneously, and a few other rare situations like that.