How do isolation levels affect performance?

What are isolation levels in databases?

Isolation levels define how transaction integrity is visible to other transactions. They control the visibility of changes made by one transaction to others.

How do these isolation levels impact performance?

Higher isolation levels can lead to more locking and blocking, which may reduce performance. Lower levels can improve performance but may risk data integrity.

Can you give examples of different isolation levels?

Sure! Common isolation levels include Read Uncommitted, Read Committed, Repeatable Read, and Serializable. Each has different trade-offs.

Which isolation level is best for high-performance applications?

For high-performance applications, Read Committed or Read Uncommitted are often preferred, as they reduce locking but may allow dirty reads.