Configuring database connections in the Active Record connection pool for apps running with a multi-threaded or multi-process web server.| devcenter.heroku.com
A description of the custom error information written to logs when your app experiences an error.| devcenter.heroku.com
A guide to using Puma on Heroku. Puma uses threads, in addition to worker processes, to make more use of a systems available CPU.| devcenter.heroku.com
A Procfile is a list of process types in an app. Each process type declares a command that is executed when a dyno of that process type is started.| devcenter.heroku.com
Bringing together Add-ons, Buttons and Buildpacks.| elements.heroku.com