Leader Election / Availability
Kind: tension
Record: tension:availability-leader-election
Canonical: Schema
"leader-election" (execution-core layer) is traded against "Availability" (correctness-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Availability" and choosing an explicit operating point.
Listed in Tensions, after Decentralization / Consistency and before Consensus / Latency.