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

What is the purpose of virtual nodes (vnodes) in consistent hashing?

— Tests your understanding of this concept.

Answer Options

A To create virtual servers for cost savings

B To distribute each physical node across multiple points on the hash ring, improving load balance

C To replicate data to virtual machines

D To handle TTL expiration virtually

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

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