{"id":"dynamodb-gsi-key-change-costs-two-wcus","text":"Changing an indexed key attribute on a GSI costs 2 WCUs (one delete of the old item + one put of the new item in the index).","truth_value":"IN","source":"entries/2026/03/11/amazondynamodb-latest-developerguide-GSIhtml.md","source_url":"","source_hash":"e5a89fef6810208a","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"dynamodb-gsi-key-change-costs-two-wcus","truth_value":"IN","reason":"premise"}]}}