Streaming Replication
Streaming Replication is a database replication technique that continuously streams write-ahead log (WAL) records from a primary database server to one or more standby servers in real-time. It enables high availability and disaster recovery by maintaining synchronized copies of data across servers, allowing failover to a standby if the primary fails. This method is commonly implemented in PostgreSQL and other relational databases to support read scaling and backup solutions.
Developers should use Streaming Replication when building systems requiring high availability, data redundancy, or load balancing for read-heavy workloads, such as e-commerce platforms or financial applications. It is essential for minimizing downtime during server failures and ensuring data consistency across distributed environments, making it a key component in disaster recovery strategies and scalable database architectures.