Rails isn't any more productive than any other languages. Unless you are talking about dead programming languages in comparison. What you need to do is figure

Rails isn't any more productive than any other languages. Unless you are talking about dead programming languages in comparison. What you need to do is figure out what the application is doing. Identify what the best language is for that task and just micro service it. Move complicated tasks into smaller services. Don't compound the complexity into a monolith whatever you do! You can get best resource utilization by containerizing an application. Most people say just multithread it Puma ruby whateves... you will go into coherency hell if your app is not designed inherentlt around the idea of puma. Just use unicorn and run it as a container. Right size it for that scale out accordingly.