Great article. One thing related to this topic is that you can have issues with cookies if you run multiple localhost apps. Sometimes it's better to access one using 127.0.0.1 instead. I wrote an article about this:

https://medium.com/gitconnected/be-careful-running-multiple-localhost-apps-8e69e0a0293b?sk=bc0ce58ec76202ed8e52291425439b2b