Backpressure / Throughput
Kind: tension
Record: tension:backpressure-throughput
Canonical: Schema
"backpressure" (correctness-core layer) is traded against "Throughput" (performance-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Throughput" and choosing an explicit operating point.
Listed in Tensions, after Bulkhead Pattern / Resource Utilization and before Assessment / Time Cost.