What happens when your "quick'n dirty proof of concept" has to become production? Rewrite? As for the other stacks: I do what everyone says not to do. I write

What happens when your "quick'n dirty proof of concept" has to become production? Rewrite? As for the other stacks: I do what everyone says not to do. I write stateful servers in native compiled languages with no GC. So far I've yet to encounter any scalability problems. They simply do not exist when said servers are runninig on 32 core monsters with gobbles of RAM and not slowed down by interpreters, garage collection and bazillion of abstraction layers. Sure I could not serve Facebook using this, but hey it works just fine for the 90% of the rest and that is where I make my money ;)