What is pessimistic locking and can you give me an example?
An example of an AI chatbot conversation about pessimistic locking in database management.
What is pessimistic locking and can you give me an example?
Pessimistic locking is a concurrency control mechanism where a transaction locks a resource to prevent others from accessing it.
Can you explain how it works in a real-world scenario?
Sure! Imagine a bank system where two tellers are processing transactions. If one teller locks a customer's account to update it, the other teller must wait until the lock is released.
What are the advantages and disadvantages of using pessimistic locking?
The main advantage is data integrity, as it prevents conflicts. However, it can lead to reduced performance due to waiting times.
Are there situations where pessimistic locking is preferred over optimistic locking?
Yes, it's preferred in high-contention environments where conflicts are likely, such as financial transactions.
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