What are the differences between optimistic and pessimistic concurrency control?

Can you explain the differences between optimistic and pessimistic concurrency control?

Sure! Optimistic concurrency control assumes that conflicts are rare and allows transactions to proceed without locking resources. It checks for conflicts before committing.

What about pessimistic concurrency control?

Pessimistic concurrency control, on the other hand, locks resources as soon as a transaction begins, preventing other transactions from accessing them until the lock is released.

Which one is better for high-traffic applications?

It depends on the application. Optimistic control is often better for high-read scenarios, while pessimistic control is suitable for high-write scenarios where conflicts are more likely.

Can you give an example of each?

Certainly! An example of optimistic control is a banking app where users check balances without locking accounts. Pessimistic control is like a ticket booking system where seats are locked during the booking process.