Circuit Breaker Strategies: Evolving from Simple to Hierarchical for 10M QPS Systems
The article analyzes how a slow downstream service can trigger a site‑wide cascade failure, explains the three‑state circuit‑breaker model, compares simple global thresholds with layered multi‑metric, multi‑granularity approaches, and evaluates Hystrix, Sentinel, and Envoy implementations for high‑throughput back‑ends.
