Building Ruby Head for your Rails App

on YouTube ↗34m

" summary

Claim: run Ruby head on CI so regressions surface before production. Actual work: build Ruby head with ruby-build inside a Dockerfile, push images to Docker Hub, schedule nightly Buildkite builds and run Rails test suites; result: a working pipeline that caught a real deadlock introduced after 3.0.1 and sped Gusto’s upgrade (project spans ~3–4 months, one month after root cause). Tools: Docker, Buildkite, ruby-build, optional jemalloc via LD_PRELOAD or compile flag, and a nightly Docker image pushed workflow.

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" chapters (6)

1. 0:00Start
2. 8:19Benefits of Gradual Ruby Upgrades
3. 10:49Disadvantages of Gradual Ruby Upgrades
4. 17:57Building Ruby Head on Docker
5. 31:141. Compilation Flag
6. 32:49Compilation flag vs. Preloading library?

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