Description: AOF, or Append Only File, is a persistence mechanism used in databases that logs every write operation performed on the data. Unlike other persistence methods, such as RDB (Redis Database Backup), which takes snapshots of the database at regular intervals, AOF records every command that modifies the database state in a text file. This allows for more precise and granular data recovery in case of failures, as all operations can be replayed from the last save point. AOF offers several configurations that allow tuning the frequency at which commands are written to the file, providing a balance between performance and durability. Additionally, the AOF file can be compacted to reduce its size by eliminating redundant commands. This persistence approach is particularly useful in applications where data loss is unacceptable and high availability is required. In summary, AOF is a powerful tool for ensuring data integrity in databases, allowing developers to choose the level of persistence that best suits their needs.
