Designing a Production LLM Gateway: Architecture, Routing, and Fallback
The article outlines a production‑grade LLM Gateway architecture divided into ingress, decision, and egress layers, detailing capability‑based, cost‑aware, latency‑aware, and semantic routing, multi‑stage fallback mechanisms, specialized load‑balancing, protocol unification, semantic caching, observability, and evaluates open‑source solutions such as LiteLLM, RouteLLM, and Portkey.
