What if we wrote a web application similar to a typical rails-application? I.e. it will have MVC, routing, migrations, some configs, all in all, everything like it’s supposed to be. But all this will be a very-very simplified version of our favorite framework Rails. There will be no generators and interactive console, beautiful layouts and messing with assets. - https://mkdev.me/en/posts/how-to-write-an-mvc-framework-in-ruby