Daily Term: Quorum

Quorum

A Quorum is the minimum number of nodes in a distributed system that must participate to ensure a reliable operation, often used in consensus or replication. For example, in a 5-node cluster, a quorum might be 3 nodes, meaning at least 3 must agree on a write for it to be committed. Quorums ensure consistency and fault tolerance (e.g., surviving minority failures), but they can impact availability if too many nodes are unavailable.

Date: 2025-08-28