4 ms·

What about mysql?

• evanweaver 8y ago
  MySQL’s default repeatable-read is a complex mix, but it is definitely not strictly serializable: https://blog.pythian.com/understanding-mysql-isolation-levels-repeatable-read/ https://blog.pythian.com/understanding-mysql-isolation-level... It’s very unclear what level of serializability MySQL’s “serializable” level actually provides; it is seldom used in practice because the performance cost is extreme (essentially table locks everywhere for both reads and writes). I would be surprised if either isolation level is correctly enforced across distributed replicas, even with semi-synchronous row-based replication. My MySQL operational experience was strongly characterized by fighting replication divergence.