@Override
    public void onMetaDataChanged(final List<MetaData> changed, final DataEventTypeEnum eventType) {
        if (CollectionUtils.isEmpty(changed)) {
            return;
        }
        String namespaceId = changed.stream().map(value -> StringUtils.defaultString(value.getNamespaceId(), SYS_DEFAULT_NAMESPACE_ID)).findFirst().get();
        this.updateMetaDataCache(namespaceId);
        this.afterMetaDataChanged(changed, eventType, namespaceId);
    }
After app auth changed.

@param changed   the changed
@param eventType the event type
shenyu-admin/src/main/java/org/apache/shenyu/admin/listener/AbstractDataChangedListener.java