除了设定超时，没有其他方式能检测这种故障。超时一般是指组件不能定期发送心跳消息或不能响应请求。

There is no way to detect the failure except by timeout: it either stops sending "I'm alive" (heartbeat) messages or fails to respond to requests.

youdao

集群化的ADC利用某种类型的心跳(heartbeat)机制检测故障，利用一种故障转移机制来实现HA。

Clustered ADCs use some kind of heartbeat mechanism to detect failures and a failover mechanism to achieve ha.

youdao

改进了基于心跳和检测点的故障检测机制，在较低的系统开销下缩短了系统检测的响应时间。

The fault detection based on the heartbeat mechanism and checkpoint is improved to decrease the detection response time under the low system expense.

youdao