[midom]

rocksdb is used in many more systems, but the storage layer behind TAO (UDB) is using MyRocks for quite a few years by now - migration was done in 2016 or so - https://engineering.fb.com/2016/08/31/core-data/myrocks-a-sp...

[zip1234]

TIL, didn't realize that it was used as the storage engine for MySQL.