alt Hacker NewsAirbnb has a version of this internally that was pretty awesome called Evergreen, based on the Uber paper as well.
I wish more companies would open source their monorepo infra. A well done monorepo is a huge force multiplier on a large organization, but the OSS world is lacking a lot of the infra so everyone starts from a painful place and works up or has a bad impression of monorepos. Google's Piper is another example where open sourcing or selling it would have done wonders for the industry. In an age of agents landing code very quickly piper has scaled very well since it was already at unimaginable commit velocity, meanwhile everyone else is trying to rebuild source control to keep up.
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> A well done monorepo is a huge force multiplier on a large organization
How so?
I work at a company which uses a monorepo, and I haven't seen any upside to it yet. We have a tools team that's invested a vast amount of work in it. Still seems strictly worse than a 'normal' polyrepo setup. I haven't understood why so many people are so enthusiastic about it.
Keeping Master Green at Scale https://dl.acm.org/doi/10.1145/3302424.3303970
I don't understand how come monorepos never just got "solved", and why git didn't expand in that direction.
I switched from a company with a monorepo to one without, and it just feels like going back to the stone age.
The problem with many of these tools is they are built on lots of other tech, like S3 dev called out: https://x.com/haipingfu/status/2084880266858995990
Piper is built on lots of other tech like spanner and chubby and many others. And some of those have specific hardware requirements that only exist in Google datacenters. Untangling that web of tech is neigh impossible (or not something worth the cost to leadership).