This chapter is an outline. The curriculum, learning objectives and
structure are settled; the prose, diagrams and code are still being written.
What is below is the plan for the chapter, not the chapter.
SQS — 5 Minute Cheat Sheet
Read time: 5 min
A compact pass over the whole topic. Read before a screening call.
Planned contents
- What SQS is and why it exists
- Producer / consumer / polling
- Standard vs FIFO
- Visibility timeout and DeleteMessage
- Retry and DLQ
- Long polling
- Batching
- Idempotency
- Key CloudWatch metrics
- Pricing in one line
Design rules for this sheet
- Tables, diagrams and bullets. Prose only where a sentence genuinely beats a row
- Scannable at a glance; printable on a laptop screen
- Every quota and price links to
_reference/aws-facts.md - It answers "remind me", not "teach me" — the course body does the teaching
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