How to eliminate cascading failures from LLM rate limits using exponential backoff, circuit breakers, and tiered fallback chains. The Bottleneck in Production Most production LLM integrations start with a direct SDK call wrapped in a naive try/except block. During quiet periods, it works fine. But when traffic spikes, your application hits provider Token-Per-Minute (TPM) or Request-Per-Minute (RPM) limits, throwing HTTP 429 errors. The immediate reaction is often an uncontr...