Replica Set

A Replica Set is a feature in databases, particularly in systems like MongoDB, that enhances data availability and reliability. It consists of multiple copies of the same data stored in different locations (servers). If one server fails, others can continue to provide access, ensuring that information is always available. The primary server handles changes, while secondary servers replicate this data. This setup not only protects against data loss but also balances workload, allowing for efficient data management and faster access for users. It’s a smart way to safeguard and streamline database operations.