Shipping Python Extensions in Rust Two Million Times a Day
summary
pyca/cryptography moves core extension code to Rust using PyO3 and setuptools-rust, lands about seven upstream PRs and several thousand lines to add abi3 support, fixes musl/alpine and 32‑bit Windows build quirks, ships a two‑step rollout (3.4 optional rust then 3.5 required), rewrites ASN.1/x509 parsing to Rust and measures an 10x faster OCSP parse, convinces infra for manylinux/musl wheels, and reaches roughly 80% of downloads on rust-capable systems.
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chapters (10)
- 0:00Intro
- 1:20Why Rust?
- 4:44How we adopted Rust
- 6:24Cleanup on aisle: everything
- 10:48How do we decide what to support?
- 15:43Outreach and Initial Release
- 19:03Lessons Learned
- 21:32Doing something useful
- 22:36Performance Results
- 23:24Architectural improvement
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