Hard Design: Distributed Key-Value Store (Redis/DynamoDB)

In the Raft consensus algorithm used by etcd, what is a 'leader election'?

— Tests your understanding of this concept.

Answer Options

A Choosing which client connects first

B Process where nodes vote to elect one leader for handling all writes, ensuring linearizable consistency

C Load balancing across nodes

D Electing the highest-priority key

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This question is from the Design: Distributed Key-Value Store (Redis/DynamoDB) topic (System Design Cases).

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