👉 Journal computing, also known as journal-based computing or journaling in the context of computing systems, is a method of data management and transaction processing that ensures data integrity and reliability. It involves maintaining a log, or journal, of all changes made to the database or system state before any actual data is written to the permanent storage. This journal acts as a temporary buffer, recording every operation (such as inserts, updates, and deletes) in chronological order. In the event of a system failure, like a power outage or hardware malfunction, the system can restore the database to a consistent state by replaying the journal entries from the last known good point. This mechanism provides atomicity, consistency, isolation, and durability (ACID properties), making journal computing a robust approach to data management in distributed systems and critical applications where data integrity is paramount.
