Quorum
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
The minimum number of members (usually more than half) that must participate for a decision to be valid or data to be consistent. In distributed systems, a write is only successful if it obtains the consent of a quorum of nodes.
SCAFFOLDING EFFECT
Reduce cognitive load
Consensus threshold. When making major decisions, do not have a one-man show, nor pursue unanimous agreement (too inefficient). Set a quorum (e.g., a key group of 3), and if they nod, the system is considered passed.
Anchor fast decisions
Consistency is established when 'enough nodes agree'. A quorum (usually > half) prevents minority dictatorship and avoids the high latency of pursuing unanimous agreement; under fault tolerance, it ensures that 'any two decision groups must intersect', preventing split-brain.
MINIMUM ACTION
In progress 0/2Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Quorumverified
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