Faster Bundler, Happier Developers

on YouTube ↗29m

" summary

Bundler and RubyGems deliver concrete speedups: a stable sort key replaces slow version comparisons (5× faster), Git gem clones run in parallel (≈5× faster for 10 repos, 40 repos <2s), HTTP connection pool size increases eliminate thread contention, and a global gem cache (opt‑in today, default soon) avoids redundant work. Measured results: 249 direct deps 37% faster, real network 2.6× faster, rails new drops ~20s→10s, and using CI Build Gem to publish precompiled binaries cuts a Rails install from ~13s to 3.8s.

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" chapters (15)

1. 0:00Introduction and welcome
2. 2:35Bundler and RubyGems importance
3. 4:20Performance challenges and goals
4. 6:07Dependency resolution bottlenecks
5. 8:10Optimizing gem version comparison
6. 10:19Speeding up Git gems
7. 11:23Faster gem downloads and installs
8. 15:56Global gem cache benefits
9. 17:18Performance improvements recap
10. 18:01Benchmarking methodology
11. 19:04Real-world speed gains
12. 21:56Compilation bottleneck and solution
13. 23:42Introducing CI Build Gem
14. 26:08Precompiled gems in production
15. 28:11Call to action and thanks

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