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Facebook's internal android repository is still mostly Java, but there is a large push to switch to Kotlin, and Kotlin's internal support has grown dramatically over the last couple of years. Coroutines have recently been allowed (although I'm personally not a fan of that decision). Flow/Compose are not necessary as we have internal tools that do similar things (looking at you, Litho).
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InfluxDB
Purpose built for real-time analytics at any scale. InfluxDB Platform is powered by columnar analytics, optimized for cost-efficient storage, and built with open data standards.
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Buck
Discontinued A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages.
That's a good bridge into saying that we don't use pretty much any standard tooling. Our build system is Buck, we use Mercurial instead of Git, and the IDE of choice seems to be Visual Studio (although Android Studio is supported, with some custom plugins required).
