{"id":"operation-result-tracks-partition-cost","text":"Every `DocumentPartitionedDB` and `TermPartitionedDB` operation returns an `OperationResult` with a `partitions_touched` field, making read/write amplification cost observable and directly comparable between strategies.","truth_value":"IN","source":"entries/2026/05/29/secondary-index-partitioning-test_secondary_index_partitioning.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"operation-result-tracks-partition-cost","truth_value":"IN","reason":"premise"}]}}