uid := string(pod.UID)
	if len(uid) == 0 {
		return "", errors.New("cannot get cache key for pod with empty UID")
	}
	return uid, nil
}

// GetNamespacedName returns the string format of a namespaced resource name.
func GetNamespacedName(namespace, name string) string {
	return fmt.Sprintf("%s/%s", namespace, name)
}

// DefaultBindAllHostIP defines the default ip address used to bind to all host.