Application Integration
CoreAmazon SQS
Durable message queues for decoupled pipeline workers.
Key points
- SQS durably buffers messages so pipeline stages can scale, retry, and recover independently.
- Consumers must handle delivery semantics, visibility, retries, and failed-message isolation.
Best-known use cases
- Buffer ingestion jobs when downstream processors cannot keep pace.
- Decouple pipeline stages so workers can retry and scale independently.
What candidates often confuse it with
- SQS is a worker queue; SNS is publish-subscribe notification and EventBridge routes matching events.
Key takeaway
Choose SQS when downstream workers need durable buffering and independent processing.
Relevant exam tasks
- D1.3 — Task 1.3: Orchestrate data pipelines
- 1.3.4 — Use notification services to send alerts (for example, Amazon SNS, Amazon SQS).