Description: Quorum read in distributed databases is an operation that ensures data consistency by requiring a response from a quorum of replicas. In this context, a quorum refers to the majority of replicas that must agree for an operation to be considered successful. This means that, for a quorum read, more than half of the replicas storing a piece of data must respond to the request. This strategy is crucial for maintaining data integrity in systems where replicas may be geographically distributed and where latency and availability are important factors. Quorum reads allow users to obtain up-to-date and consistent data, minimizing the risk of reading stale or incorrect information. Additionally, this technique is used to balance the need for consistency with availability, a fundamental principle in the design of distributed systems. In summary, quorum read is an essential tool in distributed databases that helps ensure that read operations are accurate and reliable, which is vital for applications that rely on consistent real-time data.
