Transactions and Data Consistency
Some operations require multiple database changes to succeed or fail together. Database transactions provide atomicity for supported workloads.
Transactions should be used when consistency requirements justify their cost. They are not a substitute for good data modeling, validation, idempotency, and appropriate constraints.
Transactions Are Not Free
Transactions can increase resource usage and contention. Use them when atomicity is genuinely required.
Key Takeaways
- Transactions provide atomicity across supported database operations.
- Use constraints and validation alongside transactions.
- Design operations to be idempotent where retries are possible.
Knowledge Check
What is a key benefit of a database transaction?