What is the difference between optimistic and pessimistic concurrency control?
An example of an AI chatbot conversation about optimistic vs pessimistic concurrency control in databases.
What is the difference between optimistic and pessimistic concurrency control?
Optimistic concurrency control assumes that conflicts are rare and allows transactions to proceed without locking resources. It checks for conflicts before committing.
Can you give me an example of when to use optimistic concurrency?
Sure! Use optimistic concurrency when you have a high read-to-write ratio, like in a web application where many users read data but few update it.
What about pessimistic concurrency control?
Pessimistic concurrency control locks resources as soon as a transaction begins, ensuring that no other transactions can access them until the first one is complete.
Which one is better for performance?
It depends on the use case. Optimistic control can offer better performance in low-conflict scenarios, while pessimistic control is safer in high-conflict environments.
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