{"id":"dynamodb-invisible-costs-span-ttl-and-capacity-overhead","text":"DynamoDB has multiple independent invisible cost mechanisms operating simultaneously: TTL deletes appear free locally but consume WCU on global table replicas (with no CloudTrail visibility), while capacity billing has hidden per-item overhead (100 bytes indexing, rounding penalties, GSI minimums) that disproportionately penalizes the small items TTL is most commonly applied to — the two invisible mechanisms compound on the same workload pattern.","truth_value":"OUT","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{"_retracted":true},"explanation":{"steps":[{"node":"dynamodb-invisible-costs-span-ttl-and-capacity-overhead","truth_value":"OUT","reason":"retracted premise"}]}}