Summary: Php is a stable and reliable. Nodejs: Is new and young. Go: Same history as the one above. Scalabilty is not something that you should worry about a

Summary: Php is a stable and reliable. Nodejs: Is new and young. Go: Same history as the one above. Scalabilty is not something that you should worry about at this stage, if your app reach the scale that you expect it to get then refactor and do something about it. Scalability has nothing to do with the language, so use that "Devil you know", stop wasting time and move on.