DSQL Concurrency & Resilience Playground
See how AWS Aurora DSQL handles multi-region replication and guarantees 100% protection against double-booking when two users race to book the same slot.
🎮 Simulator Controls
Clicking the button below fires two concurrent API requests at the exact same millisecond to book the same slot ID from different geographic regions.
Demo Salon - 10:00 AM
IDLEDemo Salon - 10:00 AM
IDLEHow Multi-Region Active-Active Consistency Works
AWS Aurora DSQL clusters handle active-active reads and writes across multiple regions (e.g. us-east-1 and us-west-2) simultaneously.
When write queries hit different regions, DSQL uses an internal consensus engine to serialize the transactions. The transaction that is sequenced first grabs the slot; the second transaction immediately violates the unique constraint and is safely rolled back without causing corrupt data states.