@scylladb.bsky.social has joined the party! When we needed a horizontally scalable data store for Bluesky's v2 AppView implementation, I spent a ton of time testing and evaluating every option and ScyllaDB was the clear winner. The people there have been very nice too! github.com/scylladb/scy...

An unordered / non-exhaustive list of things that helped scale Bluesky's infra efficiently: + Exiting the cloud (colocation) + HAProxy w/many Node backends + Go w/clever code + ScyllaDB + SQLite w/per user databases + Redis w/many instances + AMD servers w/many cores + Purchasing bandwidth directly

I’m fortunate to have a call with the Bluesky backend team for an hour a week, and I’m continually blown away at how good they are at engineering their systems, how thoughtful they are about protocol design, and how smoothly they’ve been handling a huge influx of new users. Seriously impressive

No, ScyllaDB (there are also some smaller Postgres and SQLite DBs, but the biggest DB that powers the app view indexes is Scylla)