How do you manage long-running transactions in Amazon RDS, and what best practices do you follow to avoid lock contention and performance issues?
To manage long-running transactions in Amazon RDS, follow these best practices :
1. Monitor transaction duration using CloudWatch metrics like “DatabaseConnections” and “ActiveTransactions.”
2. Set appropriate timeouts for queries and transactions to prevent indefinite blocking.
3. Use smaller transactions by breaking them into multiple parts, reducing lock contention.
4. Optimize query performance with proper indexing and efficient SQL statements.
5. Utilize read replicas to offload read-heavy workloads from the primary instance.
6. Implement row-level locking instead of table-level locking when possible.
7. Schedule maintenance tasks during low-traffic periods to minimize impact on performance.
