What is pessimistic locking?
An example of an AI chatbot conversation about pessimistic locking in database management.
Can you explain what pessimistic locking is?
Pessimistic locking is a concurrency control mechanism that prevents multiple transactions from modifying the same data simultaneously.
How does it differ from optimistic locking?
Unlike optimistic locking, which allows multiple transactions to proceed and checks for conflicts before committing, pessimistic locking locks the data upfront.
What are the advantages of using pessimistic locking?
The main advantage is that it prevents lost updates and ensures data integrity in high-contention scenarios.
Are there any downsides to using it?
Yes, it can lead to decreased performance due to waiting for locks, especially in systems with many concurrent transactions.
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