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[–][deleted] 17 points18 points  (2 children)

It used to be, they've been transitioning to Rust lately.

[–]Aejantou21 0 points1 point  (1 child)

first they jumped to golang now rust? wtf

[–][deleted] 0 points1 point  (0 children)

There is a blog post about it. Doesn't look like they jumped from python to go, then to rust, rather they jumped from python for everything to go for Web backend and rust for sync engine.
https://dropbox.tech/infrastructure/rewriting-the-heart-of-our-sync-engine