How many Heroku dynos do you need, and which size—An opinionated guide - Rails Autoscale
How I spent two weeks hunting a memory leak in Ruby
Why to use PUMA in production for your Rails App | by Anil Kumar Maurya | Medium
Request timeouts (H12's) when switching from Unicorn to Puma on Heroku · Issue #681 · puma/puma · GitHub
Reduce Rails Memory Usage, Fix Leaks, R14, Save Money on Heroku [4 Tips]
Nate Berkopec on Twitter: "Best memory usage of a Rails app that I've ever seen was someone running 30 Puma processes with 6GB. That's 200 MB per process. This was a very