Backend Engineering
FastAPI Rate Limiting and Cost Controls for LLM-Backed Endpoints
How to build layered rate limiting and cost controls in FastAPI for LLM-backed endpoints: request limits, token-aware budgets, Redis sliding windows, and circuit breakers.
Sachin SharmaCreator
Jul 23, 2026
8 min read
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How to build layered rate limiting and cost controls in FastAPI for LLM-backed endpoints: request limits, token-aware budgets, Redis sliding windows, and circuit breakers.
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