@Override
        protected void doRetry(final String key, final TimerTask timerTask) {
            registerService.recover(key);
            registerService.removeFallBack(key);

        }
Do retry.

@param key       the key
@param timerTask the timer task
shenyu-admin/src/main/java/org/apache/shenyu/admin/service/register/FallbackShenyuClientRegisterService.java