@Override
    public void destroy() {
        super.destroy();
        try {
            retryFuture.cancel(true);
        } catch (Throwable t) {
            LOGGER.warn(t.getMessage(), t);
        }
    }
@author Robert HG (254963746@qq.com) on 5/17/15.
lts-core/src/main/java/com/github/ltsopensource/core/registry/FailbackRegistry.java