The application layer is rarely the piece that needs to scale immediately. Usually the first step is to separate mysql or mongo and add more resources or furth

The application layer is rarely the piece that needs to scale immediately. Usually the first step is to separate mysql or mongo and add more resources or further cluster as visits increase. There is a case to made to switch ruby/rail for php/laravel. Just as rapid for development and easier scaling plus bigger ecosystem. There is also a case to be made for switching Django for vue or even simple jquery in some cases.