How do I implement file locking in a database?

How do I implement file locking in a database?

To implement file locking in a database, you can use techniques like optimistic or pessimistic locking. Which one are you considering?

What's the difference between optimistic and pessimistic locking?

Optimistic locking allows multiple transactions to proceed without locking the resource, checking for conflicts before committing. Pessimistic locking locks the resource for a transaction, preventing others from accessing it until it's released.

Which method is better for high-concurrency environments?

In high-concurrency environments, optimistic locking is often preferred as it reduces contention and improves performance, but it requires careful conflict handling.

Can you give me an example of how to implement optimistic locking?

Sure! You can implement optimistic locking by adding a version number to your records. When updating, check if the version number matches the one you retrieved. If it does, proceed; if not, handle the conflict.