Command Query Responsibility Segregation (CQRS) / Eventual Consistency
Kind: tension
Record: tension:command-query-responsibility-segregation-cqrs-eventual-consistency
Canonical: Schema
"command-query-responsibility-segregation" (execution-core layer) is traded against "Eventual Consistency" (execution-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Eventual Consistency" and choosing an explicit operating point.
Listed in Tensions, after Event Sourcing / Query Complexity and before Domain Events / Event Granularity.