Journals on file systems

A journal on a computer's file system is like a notebook where all changes and updates are recorded before they are officially saved. This helps ensure that if there’s a problem, like a power outage, the system can recover lost information more easily. When you save a file, the journal keeps a log of that action, so it can go back and fix any issues that arise. This process enhances data safety and integrity, ensuring that files remain consistent and protected against corruption.