Return 429 (Too Many Requests) instead of 503

Signed-off-by: Radoslav Dimitrov <[email protected]>

Author: rdimitrov

deploy/pkg/k8s/registry.go

@@ -247,9 +247,10 @@ func DeployMCPRegistry(ctx *pulumi.Context, cluster *providers.ProviderInfo, env
 				"cert-manager.io/cluster-issuer": pulumi.String("letsencrypt-prod"),
 				"kubernetes.io/ingress.class":    pulumi.String("nginx"),
 			// Rate limiting to protect against abuse
-			// Allows 1 request/second sustained, with bursts up to 5 req/sec
-			"nginx.ingress.kubernetes.io/limit-rps":              pulumi.String("1"),
-			"nginx.ingress.kubernetes.io/limit-burst-multiplier": pulumi.String("5"),
+			// Allows 180 requests/minute (3 req/sec avg), with bursts up to 540 requests
+			"nginx.ingress.kubernetes.io/limit-rpm":              pulumi.String("180"),
+			"nginx.ingress.kubernetes.io/limit-burst-multiplier": pulumi.String("3"),
+			"nginx.ingress.kubernetes.io/limit-req-status-code":  pulumi.String("429"),
 			},
 		},
 		Spec: &networkingv1.IngressSpecArgs{