Consistency

What it means for replicated data to agree: consistency models, quorums, and the CAP/PACELC trade-offs that decide what a read is allowed to see.

Explainers

• Consistency, Quorums & CAP — Replication forces copies to disagree. The consistency ladder, the N/W/R quorum rule (W+R>N), and CAP stated precisely — the real choice is C-vs-A only during a partition — turned live on a 5-replica cluster.