{"id":"dynamodb-streams-lambda-not-exactly-once","text":"DynamoDB Streams + Lambda does not guarantee exactly-once delivery — duplicate records are possible, so Lambda function code must be idempotent.","truth_value":"IN","source":"entries/2026/03/11/amazondynamodb-latest-developerguide-StreamsLambdaBestPracticesWithDynamoDBhtml.md","source_url":"","source_hash":"90668e33fbe14605","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"dynamodb-streams-lambda-not-exactly-once","truth_value":"IN","reason":"premise"}]}}