How to design a Rate Limiter

1. A rate limiter can either be at the client or the server side.
2. Which algorithm are you going to use?
3. What happens when requests are rate-limited? HTTP Status Code 429 - Too Many Requests
4. Challenges in scaling a rate limiter
5. Rate limiting can happen at different levels. We can also apply rate limiting by IP addresses using Iptables.

Related Notes

Sources

• (Done) Design A Rate Limiter - Highlights