Why does ruby rails need puma or unicorn? - Stack Overflow
what is the correct way to set up puma, rails and nginx with docker? - Stack Overflow
Dummy Puma server Sinatra Docker app. running on a socket - just plug your NginX. Good for debugging NginX config without connecting larger Puma app : r/nginx
How To Deploy a Rails App with Puma and Nginx on Ubuntu 14.04 | DigitalOcean
Scaling Ruby Apps to 1000 Requests per Minute - A Beginner's Guide
what is the correct way to set up puma, rails and nginx with docker? - Stack Overflow
Selecting a web server and an application server | Mastering Redmine - Second Edition