Answer Posted / Nishi Jain

The duration of a MongoDB replica set failover depends on several factors, such as the size of your data set, network conditions, and hardware capabilities. During failover, the primary node is elected, and the secondary nodes synchronize their data with the new primary. The process typically involves a step called 'heartbeat' to check the health of nodes, followed by 'election' to choose a new primary, and then 'recovery' where the new primary catches up on missing data. While it's challenging to give an exact time for failover in all scenarios, a well-configured replica set should minimize downtime during such events.

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