Configuring database connections in the Active Record connection pool for apps running with a multi-threaded or multi-process web server.| devcenter.heroku.com
Heroku Review Apps run the code in any GitHub pull request in a complete, disposable Heroku app. Review Apps each have a unique URL you can share, making them a great way to propose, test, and merge changes to your| 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
Configuring Rails applications to use the Unicorn web server, enabling the concurrent processing of requests.| devcenter.heroku.com
Understand your application's memory usage| devcenter.heroku.com
Bringing together Add-ons, Buttons and Buildpacks.| elements.heroku.com