Dead-Letter Queue / Operational Overhead
Kind: tension
Record: tension:dead-letter-queue-operational-overhead
Canonical: Schema
"dead-letter-queue" (execution-core layer) is traded against "Operational Overhead" (resource-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Operational Overhead" and choosing an explicit operating point.
Listed in Tensions, after Append-Only Log / Storage Growth and before Idempotent Consumer / State Overhead.