Quorum is an incident command plane built on Amazon Aurora DSQL. The failover story lives in another post. This one is about a narrower question that turned out to be the foundation: when several responders write to the same incident at the same moment, across regions, during the worst minutes ...
Source: [Dev.to](https://dev.to/hocmemini/optimistic-concurrency-is-the-whole-design-event-sourcing-on-aurora-dsql-cj7)