Can you explain how locking affects performance in a database?
Locking is a mechanism used to control access to data in a database. It can improve data integrity but may reduce performance due to contention.
What types of locks are there, and how do they differ in performance?
There are several types of locks, including exclusive locks, shared locks, and row-level locks. Exclusive locks prevent other transactions from accessing the locked data, which can lead to delays, while shared locks allow concurrent reads but block writes.
How can I minimize the performance impact of locking?
To minimize performance impact, you can use finer-grained locking, optimize transaction duration, and implement lock timeouts.
Are there any alternatives to locking?
Yes, alternatives include optimistic concurrency control and versioning, which allow multiple transactions to proceed without locking.
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