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Why Facebook does not use Git – and why most other devs do • DEVCLASS (devclass.com)

submitted 4 months ago by AnActOfCreation to c/programming

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Facebook does not use Git due to scale issues with their large monorepo, instead opting for Mercurial.
Mercurial may be a better option for large monorepos, but Git has made improvements to support them better.
Despite some drawbacks, Git usage remains dominant with 93.87% share, due to familiarity, additional tools, and industry trends.

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[–] aport 1 points 4 months ago (1 children)

Old, unreachable commits will be garbage collected.

[–] FizzyOrange 2 points 4 months ago (1 children)

Does that not happen with Mercurial? If not that seems like a point against it.

[–] aport 1 points 4 months ago (1 children)

I'm confused, the behavior you just said was "exactly the same in git" is now a problem for Mercurial?

[–] FizzyOrange 1 points 4 months ago (1 children)

I thought it was exactly the same based on the description.

[–] [email protected] 1 points 4 months ago* (last edited 4 months ago)

No the old commit is always there, marked as obsolete with the information of what it became. No holes in history. (Assuming you use the obsolecense markers)