Build an API Rate-Limiting Layer

per-client quotas and 429 responses

Challenge 2 of Traffic & ResilienceIntermediate~55 min

The applied, gateway side of rate limiting: per-client quotas that return rich results, standard X-RateLimit headers, per-endpoint limits, tiered plans, and a 429-emitting middleware.

5 steps

1. 1Per-Client Quotas
2. 2Rate-Limit Headers
3. 3Per-Endpoint Limits
4. 4Tiered Plans
5. 5The 429 Middleware