Eileen Uchitelle github.blog

Running GitHub on Rails 6.0  ↦

Eileen Uchitelle shared the backstory of how they have GitHub running on Rails 6.0 just 1.5 weeks after its final release. 👏

As soon as we finished the Rails 5.2 upgrade last year, we started upgrading our application to Rails 6.0. Instead of waiting for the final release, we’d upgrade every week by pulling in the latest changes from Rails master and run all of our tests against that new version. This allowed us to find regressions quickly and early—often finding regressions in Rails master just hours after they were introduced. Upgrading weekly made it easy to find where these regressions were introduced since we were bisecting Rails with only a week’s worth of commits instead of more than a year of commits.


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