public void putIngressName(final String namespace, final String serviceName, final String ingressNamespace, final String ingressName) {
        List<Pair<String, String>> list = INGRESS_MAP.computeIfAbsent(getKey(namespace, serviceName), k -> new ArrayList<>());
        list.add(Pair.of(ingressNamespace, ingressName));
    }
Put ingress by service namespace and name.

@param namespace service namespace
@param serviceName service name
@param ingressNamespace ingress namespace
@param ingressName ingress name
shenyu-kubernetes-controller/src/main/java/org/apache/shenyu/k8s/cache/ServiceIngressCache.java