Not sure about the scaling part

I have work on a large application using perl and the readability and maintability where horrendous. The performance where surprisingly good enough (millionsn of request a day); although switching to go (direct translation without any refactoring or usage of fancy go features) yield huge gains in latency and memory usage.

I have work with go, PHP, java, and JavaScript on large application and they all way better than perl. Not even comparable.

Before there was python, before there was node, there was perl. It’s old, it’s crufty, it’s a product of a bygone age, but even today if you want to do something with regular expressions and ingesting text it’s still one of the easiest options. Of course it’s highly debatable if you should ever use regex to ingest text.