build1 publisher
Conditional PutItem claim on orderId blocks duplicate charges from repeated SQS messages
SQS standard queues and Lambda event source mappings both deliver at least once, and that guarantee is about the envelope. A lab in us-east-1 sent the same 150-real order four times and logged four charges.
Publishers:dev.to
Reality
- Evidence56
- Adoption
- Insufficient
- Hype gap−8
- Incentives22
- Confidence62