{"id":"dynamodb-transactional-reads-quadruple-cost-vs-eventually-consistent","text":"DynamoDB transactional reads cost 4x more than eventually consistent reads (2 RCU vs 0.5 RCU per 4 KB), making consistency choice the single largest per-read cost lever.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"dynamodb-transactional-reads-quadruple-cost-vs-eventually-consistent","truth_value":"IN","reason":"premise"}]}}