crash recovery

Crash recovery is the process a computer system uses to restore itself and recover data after an unexpected shutdown or failure, such as a power outage or system crash. It detects any incomplete or corrupted data, reverts to the last consistent state, and ensures all data is accurate and intact. This is typically achieved through use of logs or backup copies that keep track of changes, allowing the system to roll back or redo transactions as needed. The goal is to minimize data loss and return the system to normal operation efficiently after disruptions.