For anyone building with Ruby on Rails, you’ll eventually find yourself Googling “How to make Rails tests faster” or “RSpec speed optimisation” or even “Too many FactoryBot records”. The Zero Gravity engineers, who once spent hours scrolling forums for answers themselves, have finally cracked the code. Ollie, one of our engineers, is here to talk you through his foolproof formula for running lightning speed Rails tests, to make the platform (and building it) as smooth as possible.