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Re:Why Google Stores Billions of Lines of Code in a Single R... by avita1 on Tuesday June 28, 2016 @03:29PM (#11996766)
> Also, please compare the easiness of setting up CI for a hundred of repositories compared to a single one with tens thousand of files.

It's not so black and white though. There's plenty of difficulty in keeping a mono-CI system running and being helpful.

* The CI service becomes a single point of failure for all developer productivity

* Running a full build on every commit while accounting for semantic merge issues (so serially) is non trivial.

Jane Street did a pretty good write up of how hard this can be: https://blogs.janestreet.com/making-never-break-the-build-sc...

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