Back End: Timed-Task Scheduling High Availability Retrofit (定时任务调度高可用改造)

[EdmondFrank]

The current report timer refresh relies on the service's timed tasks to achieve this.

However, currently, to avoid duplicate task execution, the timed task is scheduled on only one fixed node, which is not completely reliable, and if the specified machine goes down, the timed task will fail to execute.

[EdmondFrank]

With the addition of distributed monitoring, when the only crontab service on an application node is stopped, the service can be discovered and restarted in a short time, ensuring that on the application node, there is and only one crontab service running.