In Ruby on Rails v5.2 and Puma v4, after restarting puma at the time of logrotate, unnecessary workers continue to remain · Issue #1891 · puma/puma · GitHub
Puma no longer starts after server restart · Issue #1365 · puma/puma · GitHub
Question: How to debug what cause [20795] ! Terminating timed out worker: 21499, also 100% CPU (log file didn't output anything useful) · Issue #1627 · puma/puma · GitHub
How to add SSL to your localhost development environment using Ruby on Rails with Puma - DEV Community
Ruby on Rails, restart Puma server script | by David Munoz Constantine | Medium
Managing Unicorn & Puma web servers with systemd | by Igor Kuznetsov | Medium