Description: Optimistic locking is a concurrency control mechanism based on the premise that multiple transactions can execute simultaneously without interfering with each other. Unlike pessimistic locking methods, which restrict access to resources while a transaction is in progress, optimistic locking allows transactions to proceed without initial constraints. This approach is founded on the assumption that collisions between transactions are rare. During the process, each transaction operates on a copy of the data, and at the end, it is checked whether there have been changes to the original data since the transaction began. If no changes have occurred, the transaction is confirmed; otherwise, it is aborted, and the user is required to retry. This method is particularly useful in environments where transactions are predominantly read-heavy and where resource contention is minimal. Optimistic locking is known for its efficiency in resource usage, as it minimizes wait times and allows for higher throughput in high-concurrency systems. However, its implementation can be more complex, as it requires proper conflict handling and logic for retrying failed transactions.
