👉 Check computing is a method used in distributed systems to ensure data consistency and reliability across multiple nodes or replicas. It involves periodically computing a "checksum" or hash of the data stored on each node, which is then compared against the expected value to verify that the data has not been corrupted or altered during transmission or storage. If discrepancies are detected, it indicates a potential issue with the data, allowing for corrective actions such as retransmission or re-replication. This process is crucial in maintaining the integrity of distributed databases and systems, especially in environments where data availability and consistency are paramount. By leveraging check computing, distributed systems can achieve higher levels of fault tolerance and data reliability, ensuring that all replicas remain synchronized and consistent.