Summary
Rate limiting at service ingress caps the load each upstream can place on a downstream, preventing the overload cascade triggered by burst traffic from multiple callers.
Evidence
- ·rate_limiting bounds request rate per identity, protecting downstream services from overload (patterns/rate_limiting.yaml)
- ·cascading_failure is increased load propagating through the dependency graph, amplified by retry storms (failure_modes/cascading_failure.yaml)
Evidence grounding
Grounded, 2 supporting itemsIngress rate capping is a secondary defense against overload-driven cascades (circuit breaker/bulkhead are the primary ones the failure mode names).