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Switching from Unicorn to Puma. Cloud hosting providers, like Amazon… | by Guy Callaghan | FiNC Tech Blog | Medium
Request timeouts (H12's) when switching from Unicorn to Puma on Heroku · Issue #681 · puma/puma · GitHub
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How we've made Phusion Passenger 5 ("Raptor") up to 4x faster than Unicorn, up to 2x faster than Puma, Torquebox
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