[venantius]

Airbnb uses a monorepo for JVM-based project but most of Airbnb's code at least as of mid-2017 was not run on the JVM and was hosted multi-repo.

[fjp]

What are AirBnb's unique scaling issues other than just being a web app with tons of usage?

Uber has navigation, route optimization, queuing, etc. Facebook has to propagate activity our to massive and complex social network graphs.

I'm not discounting the toughness of operating at Airbnb's scale, but from my limited understanding it seems like they are not solving a new problem.

[novok]

Map search, automatic dynamic pricing, predicting busy periods, predicting user & provider preferences, etc.

[huac]

i was a data scientist so i knew of monorail but never touched that side of things :)