private CuratorCache findFromCache(final String key) {
        for (Map.Entry<String, CuratorCache> cache : caches.entrySet()) {
            if (key.startsWith(cache.getKey())) {
                return cache.getValue();
            }
        }
        return null;
    }
find cache with  key.
@param key key.
@return cache.
shenyu-registry/shenyu-registry-zookeeper/src/main/java/org/apache/shenyu/registry/zookeeper/ZookeeperClient.java