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Rate Limit Architecture for OpenAI at Scale (ANSWERED)

Project BasedGPTMedium14 min read

TL;DR — Quick Answer

Central API proxy with token bucket per tenant, priority queues, request coalescing, caching, model routing to cheaper tiers, backoff with jitter, and observability on 429 patterns — never expose API keys to browsers.

The Interview Question

Design client-side and server-side rate limiting when thousands of users share OpenAI organization limits.

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