GitHub - rubinius/heroku-rbx-puma-rails-app: How to get an app running on Heroku using Rubinius and Puma
GitHub - heroku/barnes: Tell StatsD about request time, GC, objects and more. Latest Rails 4 and Ruby 2.1 support, and ancient Rails 2 and Ruby 1.8 support.
GitHub - motdotla/rails-graphql-heroku-template: The bare minimum for a Rails app implementing GraphQL, running puma, and hostable on Heroku (and elsewhere)
![ruby on rails - Heroku, Puma, Redis, Sidekiq and Connection Limits , ERR max number of clients reached - Stack Overflow ruby on rails - Heroku, Puma, Redis, Sidekiq and Connection Limits , ERR max number of clients reached - Stack Overflow](https://i.stack.imgur.com/9wNLa.jpg)