LESSON 1.3
Queues and asynchronous work
Learn key techniques and workflows in System Design Foundations.
26m
intermediate
13,235 students
Overview
A queue decouples producers from consumers and absorbs bursts. The cost is that you now have to think about ordering, retries, and duplicates.
In this lesson you will:
- Move slow work out of the request path
- Handle retries, dead letters, and duplicate delivery
- Reason about ordering guarantees you actually have
Pro Tip
Use caching and revalidation wisely to ensure your app stays fast and data remains fresh without unnecessary requests.