Gems desenvolvidas para o site cookpad.com segundo slides https://speakerdeck.com/a_matsuda/the-recipe-for-the-worlds-largest-rails-monolith

cookpad_gems.txt

https://github.com/sorah/mamiya
Faster deploy tool using tarballs and serf

https://github.com/eagletmt/switch_point
Switching database connection between readonly one and writable one

https://github.com/cookpad/rrrspec
Distributed RSpec

https://github.com/amatsuda/database_rewinder
minimalist's tiny and ultra-fast database cleaner

https://github.com/winebarrel/ridgepole
Ridgepole is a tool to manage DB schema. It defines DB schema using Rails DSL, and updates DB schema according to DSL. (like Chef/Puppet)

https://github.com/cookpad/chanko
Rapidly and safely prototyping your rails application

https://github.com/cookpad/kage
Kage (kah-geh) is a shadow proxy server to duplex HTTP requests