Transactional Replication
Transactional replication is a database replication method that captures and distributes individual data modifications (inserts, updates, deletes) from a publisher database to one or more subscriber databases in near real-time. It ensures data consistency by replicating transactions in the order they occur, typically using a log-based mechanism to track changes. This approach is commonly used in SQL Server and other relational database management systems for scenarios requiring low-latency data synchronization.
Developers should learn transactional replication when building distributed systems that require real-time data availability across multiple locations, such as reporting databases, data warehousing feeds, or high-availability setups. It is particularly useful for offloading reporting workloads from production databases, enabling geographic data distribution, and supporting disaster recovery strategies where subscribers need up-to-date data copies.