How GitHub builds GitHub with GitHub
summary
GitHub shows how it builds itself using its own stack: Codespaces starts a full dev environment in under a minute instead of cloning a 16 GB repo, GitHub Actions runs matrixed builds and parallel deployments, and CodeQL plus push protection blocks leaked tokens and finds HTTP/OAuth bugs before merge. The org ships ~80,000 deployments a year, hosts ~100M accounts, serves ~4B API requests/day, and records 1.5M commits in the main repo; feature flags, telemetry queries and Copilot (used by ~75% of engineers) close the loop.
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chapters (8)
- 0:00Engineering at GitHub
- 4:48Developer experience goals
- 8:29Live coding demonstration
- 15:48Planning and tracking work
- 21:24Automation with actions
- 25:21Security best practices
- 32:26Feature flags and monitoring
- 37:12Data-driven decisions
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