What is pessimistic locking in database management?
An example of an AI chatbot conversation about pessimistic locking in databases.
What is pessimistic locking in database management?
Pessimistic locking is a concurrency control mechanism that prevents other transactions from accessing a resource while it's being modified.
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 resource upfront.
What are the advantages of using pessimistic locking?
The main advantage is that it prevents conflicts and ensures data integrity in high-contention environments.
Are there any downsides to using pessimistic locking?
Yes, it can lead to reduced performance and increased wait times, as transactions may block each other.
In what scenarios is pessimistic locking recommended?
It's recommended in scenarios with high contention for resources, where data integrity is critical.
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