问题描述
正在开发需要有一些后台作业的应用程序，例如在待处理的警报上发送电子邮件。在独立配置中，作业使用Spring调度程序和调度任务进行配置和工作。
但是我不知道如何使它们在高可用性的JBoss环境下同步工作。主要问题是避免不同节点上的作业同时运行。
Im developing an application that needs to have some background jobs, for example for sending emails on pending alerts. In a standalone configuration the jobs are configured and working fine with Spring scheduler and scheduled-tasks.But i don't know how to make them work synchonized on a clustered with high avaliability JBoss environment. The main problem is to avoid that jobs on different nodes run at the same time.
我已经阅读了关于Quartz：
I've read this about Quartz:
但是在高可用性情况下不建议使用它：
But it's not recomended on on a high avaliability scenario:
到现在为止，我们的服务/ its.htm解决了自制阻塞系统的同步问题（）。但我想知道JBoss是否为这个常见的问题提供了一些解决方案。
By now i have workarounded the synchronization problem with a self made blocking system (Why my pessimistic Locking in JPA with Oracle is not working). But i wish to know if JBoss provides some solution for this certainly common problem.
推荐答案
您可以尝试一个HA Singleton一个EJB Singleton配置为仅在集群中的一个节点上运行。然后，该单例可以使用EJB Timer服务来调度作业。请参阅有关HA singleton的文档：
You can try an HA Singleton, which is an EJB Singleton configured to be only running on one node in a cluster. That singleton can then use the EJB Timer Service for scheduling your jobs. See the documentation about HA singleton: https://access.redhat.com/documentation/en-US/JBoss_Enterprise_Application_Platform/6/html/Development_Guide/Implement_an_HA_Singleton.html
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