Cianplan

Level 4: Reliability, security & cloud · L4.6 AWS architecture decisions (SAA-C03)

Decoupling on AWS: SQS, SNS, EventBridge and Step Functions

Choose SQS standard or FIFO, set visibility timeouts and dead-letter queues, and pick SNS fan-out, EventBridge or Step Functions for a loosely coupled design.

12 min · Pro

What you take away

  • SQS standard is at-least-once with best-effort order and nearly unlimited throughput; FIFO orders within a message group ID and pays for it in throughput.

And 3 more inside the class, in Pro.

How the class is laid out

  1. The problem
  2. The simple version
  3. SQS: the queue, in two flavours
  4. SNS, EventBridge and Step Functions
  5. Check your understanding