GitHub's Code Was Breaking Every 8 Hours. Here's Why.
Try Qodo for free: https://dub.sh/cwl-qodo
8 hours. That's how long engineers waited to ship a single feature. If one thing went wrong, everyone started over. The system they built to speed things up was actually making everything worse.
This is the story of how GitHub went from a broken deployment pipeline to shipping 2,500+ pull requests a day and how a script written by one developer in 2001 inspired the solution that powers open source today.
In memory of Peter Miller (1960–2014), whose work on Aegis helped lay the foundation for modern merge queues.
Sources:
Will Smyth from GitHub: https://github.blog/engineering/engineering-principles/how-github-uses-merge-queue-to-ship-hundreds-of-changes-every-day/
graydon2 "not rocket science": https://graydon2.dreamwidth.org/1597.html
Graphite: https://graphite.com/blog/bors-google-tap-merge-queue
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TIMESTAMPS
0:00 - The Problem
0:41 - How GitHub Started
3:50 - The Old System: Trains
6:15 - The Not Rocket Science Rule
9:36 - The Change They Needed
10:45 - Qodo (Sponsor)
11:49 - The Merge Queue Solution
14:15 - Rolling It Out to 1,000 Engineers
15:30 - The Results
16:21 - What I Learned
17:28 - Credits
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Chapters (11)
The Problem
0:41
How GitHub Started
3:50
The Old System: Trains
6:15
The Not Rocket Science Rule
9:36
The Change They Needed
10:45
Qodo (Sponsor)
11:49
The Merge Queue Solution
14:15
Rolling It Out to 1,000 Engineers
15:30
The Results
16:21
What I Learned
17:28
Credits
🎓
Tutor Explanation
DeepCamp AI