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![lauriewired Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::1610352539089899520.png) LaurieWired [@lauriewired](/creator/twitter/lauriewired) on x 81.1K followers
Created: 2025-07-21 19:18:57 UTC

Windows is one massive (private) Git repo.

When I was at MS, the Windows Source had around ~3k PRs a day!

Regular Git didn’t scale to those levels at the time. 

Internally there was a progression from Git -> GVFS -> Scalar -> merge back to Git. Here's how it worked:

![](https://pbs.twimg.com/media/GwZ3hgJbEAE0PXx.jpg)

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