![Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT](https://miro.medium.com/max/1400/1*kJlineY1h8TLUJ9L8pLceA.png)
Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT
![Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT](https://miro.medium.com/max/1200/1*-k5nqnm1RR0KelAZ5xHXfQ.png)
Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT
![Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT](https://miro.medium.com/max/1838/0*EmmhijVk2W4Y2VaM.png)
Why puma workers constantly hung, and how we fixed by discovering the bug of Ruby v2.5.8 and v2.6.6 | by Yohei Yoshimuta | ITNEXT
![How we've made Phusion Passenger 5 ("Raptor") up to 4x faster than Unicorn, up to 2x faster than Puma, Torquebox How we've made Phusion Passenger 5 ("Raptor") up to 4x faster than Unicorn, up to 2x faster than Puma, Torquebox](https://www.rubyraptor.org/img/rack.png)
How we've made Phusion Passenger 5 ("Raptor") up to 4x faster than Unicorn, up to 2x faster than Puma, Torquebox
Booting puma shows "WARNING: Detected 21 Thread(s) started in app boot" · Issue #25259 · rails/rails · GitHub
![Switching from Unicorn to Puma. Cloud hosting providers, like Amazon… | by Guy Callaghan | FiNC Tech Blog | Medium Switching from Unicorn to Puma. Cloud hosting providers, like Amazon… | by Guy Callaghan | FiNC Tech Blog | Medium](https://miro.medium.com/max/970/1*ZLY4Gb90oZaAPHFnhJCi4w.png)