The Ruby on Rails database connection pool | by Maxence Malbois | Medium
ruby on rails - (Heroku + Sidekiq) Is my understanding of how Connection Pooling works correct? - Stack Overflow
Alef Oliveira on Twitter: "Has anyone had this problem when trying to deploy Rails 7 on Heroku? My stack: ruby: 3.0.2 rails: 7.0.0 #ruby #rails # heroku #deploy https://t.co/Y04A42CjGQ" / Twitter
Your first Rails Web App — Know your Stack | by Florian Stagliano | Medium
puma-herokuをやめてPuma5にアップグレードした | Webuilder240.com
Ruby Language Metrics (Public Beta) | Heroku Dev Center
Better Performance On Heroku: Thin vs. Unicorn vs. Puma