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What is primary and secondary replica set in mongodb?
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Answer / Shanky Bhatnagar
In MongoDB, a Replica Set consists of one primary and multiple secondary nodes. The primary node is the only member that writes data to the database, while secondaries are read-preferred or write-enabled replicas used for high availability and scalability. Read-preferred secondaries prioritize reads over writes during failover, whereas write-enabled secondaries can receive write operations when the primary is down.
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