Serializable Isolation Level

Serializable isolation level is the strictest form of data protection in databases. It ensures that transactions occur completely independently, preventing issues like "phantom reads," where new data appears unexpectedly during a transaction. Imagine trying to book tickets for a popular event: under this level, if someone else is also booking at the same time, one request will wait until the other is completed. This guarantees that the final results are consistent and reliable, similar to ensuring nobody can make changes while you're finalizing your purchase. However, it can lead to longer wait times when multiple transactions occur simultaneously.