@Override
    public void handle(final String json, final String eventType) {
        List<T> dataList = convert(json);

        if (CollectionUtils.isEmpty(dataList)) {
            return;
        }

        DataEventTypeEnum eventTypeEnum = DataEventTypeEnum.acquireByName(eventType);
        switch (eventTypeEnum) {
            case REFRESH:
            case MYSELF:
                doRefresh(dataList);
                break;
            case UPDATE:
            case CREATE:
                doUpdate(dataList);
                break;
            case DELETE:
                doDelete(dataList);
                break;
            default:
                break;
        }
    }
Do delete.

@param dataList the data list
shenyu-sync-data-center/shenyu-sync-data-websocket/src/main/java/org/apache/shenyu/plugin/sync/data/websocket/handler/AbstractDataHandler.java