Serializable Snapshot Isolation (SSI)

Serializable Snapshot Isolation (SSI) is a database mechanism that ensures multiple transactions occur without interfering with each other, maintaining data accuracy and consistency. It builds on Snapshot Isolation, where transactions see a consistent view of data, and adds checks to prevent anomalies like conflicts or data corruption that can happen under simplistic snapshot methods. SSI detects potential problems early and automatically aborts conflicting transactions, ensuring the system behaves as if all transactions happened sequentially. This approach offers high concurrency and performance while preserving the integrity of the database, making it suitable for complex, multi-user applications requiring reliable transaction processing.