Backward Recovery
Backward recovery is a fault tolerance technique in computing where a system reverts to a previous, known-good state after an error or failure occurs. It involves restoring data or system configuration from a checkpoint or backup taken before the failure, effectively 'rolling back' to a stable point. This approach is commonly used in database systems, transaction processing, and distributed systems to ensure data consistency and reliability.
Developers should learn and use backward recovery in scenarios requiring high data integrity and system availability, such as financial transactions, e-commerce platforms, or critical infrastructure where errors could lead to data corruption or loss. It is essential for implementing rollback mechanisms in database transactions (e.g., using SQL ROLLBACK), version control systems (e.g., Git revert), or disaster recovery plans to minimize downtime and maintain operational continuity.