Discord has migrated trillions of message records from Apache Cassandra to ScyllaDB, reducing the size of the largest cluster from 177 Cassandra nodes to 72 ScyllaDB nodes and reducing tail latencies for reads and writes. The move has unlocked new product use cases because of the improved database stability and performance.
They have a nice logo. I’m easily won over with stuff like that.
TiDB is the one I’m watching in the relational db realm.