public Integer getAndDecrementDomainNums(final String domain) {
        AtomicInteger count = DOMAIN_NUMS_MAP.computeIfAbsent(domain, k -> new AtomicInteger(0));
        if (count.intValue() > 0) {
            return count.getAndDecrement();
        }
        throw new ShenyuException("Decrement when domain ssl counts <= 0, an unknown exception has occurred.");
    }
Get and decrement the number of the ingress that enables the domain name to take effect.

@param domain tls domain
@return the previous number of the ingress that enables the domain name to take effect
shenyu-kubernetes-controller/src/main/java/org/apache/shenyu/k8s/cache/IngressSecretCache.java