Quotas and load shedding
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
distinguish three related controls.
Planned topics
- Rate limit: short-term speed (requests per second); protects capacity.
- Quota: long-term allowance (requests per month or plan); about business terms.
- Load shedding: the server deliberately rejects low-priority work when overloaded, regardless of who is calling.
- Shed by priority: keep checkout, drop recommendations first.
- Respond
429 Too Many Requestsfor limits and quotas;503 Service Unavailablefor shedding.
Draft outline details
Demonstration
| Control | Trigger | Status |
|---|---|---|
| Rate limit | client exceeds rate | 429 |
| Quota | plan allowance used | 429 or 403 (documented) |
| Load shedding | server overloaded | 503 |
Check your understanding
Which control reacts to server overload, not client behavior?
Show answer
Load shedding.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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