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