Onsite with a Rate Limiter, an Airbnb Design Question, and an AI-Assisted Debugging Round

Coding The problem: implement a Fixed Window Rate Limiter. Implement a rate limiter middleware for a web service built on FastAPI and Uvicorn. Every request has to satisfy both of these at the same time: Global limit: at most 100 requests per minute Domain limit: at most 3 requests per second per domain If either limit gets triggered, the request should be rejected. They wanted the fixed-window v…

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