What are the differences between locking algorithms?

What are the differences between locking algorithms?

Locking algorithms are methods used to control access to shared resources in concurrent programming. The main types include pessimistic and optimistic locking.

Can you explain pessimistic locking?

Pessimistic locking assumes that conflicts will occur, so it locks resources as soon as they are accessed, preventing other transactions from modifying them until the lock is released.

And what about optimistic locking?

Optimistic locking, on the other hand, allows transactions to proceed without locking resources initially. It checks for conflicts before committing changes, rolling back if a conflict is detected.

Which one is better for performance?

It depends on the use case. Optimistic locking can be better for read-heavy scenarios, while pessimistic locking may be more suitable for write-heavy environments.