State Isolation / Data Sharing
Kind: tension
Record: tension:data-sharing-state-isolation
Canonical: Schema
"state-isolation" (atomic-boundary layer) is traded against "Data Sharing" (atomic-boundary layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Data Sharing" and choosing an explicit operating point.
Listed in Tensions, after Pessimistic Locking / Lock-Free Throughput and before Controlled Side Effects / Performance Optimization.