Rate-limited LLM API Gateway

Build a gateway that sits in front of any LLM API and enforces per-user token-bucket rate limits. Essential infrastructure for every production AI product.

You will learn to:

• Understand the token bucket algorithm and when to use it over other rate limiting approaches
• Implement per-user token bucket rate limiting using Redis atomic operations
• Rate limit by LLM token consumption, not just request count
• Write load tests using Locust to verify rate limiting under concurrent traffic
• Build a usage analytics endpoint for monitoring consumer behavior