Hardening YDB with Jepsen: lessons learned

This post was co-authored with Evgeniy Ivanov . In our blog, we extensively cover YDB performance. Specifically, we have compared distributed DBMSs with PostgreSQL and discussed TPC-C in depth. However, we have entirely overlooked the topic of correctness testing. It doesn’t matter if your transactions are fast if they are not ACID-compliant. In our recent post , we demonstrated how easy it is to introduce bugs when using weak transaction isolation levels. In our opinion, “serializable” isolation should be