Description: Replication lag refers to the time interval between when a change is made in the primary database and when that change is reflected in the replica. This phenomenon is crucial in distributed systems and replicated databases, where data consistency and availability are essential. Lag can be caused by various factors, such as network latency, system load, replication configuration, and the size of the data being replicated. Significant lag can lead to temporary inconsistencies between replicas, which can affect transaction integrity and user experience. Therefore, it is essential to monitor and manage replication lag to ensure that applications relying on up-to-date data function correctly. In environments where high availability is critical, such as in financial or e-commerce applications, minimizing replication lag becomes a priority to maintain user trust and operational efficiency.
