Job Storage

In the previous chapters, we didn't spend any time discussing where the job and trigger information for the Scheduler was stored. You might have realized, however, that when you stopped the Scheduler, the knowledge of which jobs had run and which ones had not was lost. In fact, all the information about the running jobs was destroyed.

When the application was restarted, the trigger and job information was added back, and everything was fine again. Suppose, however, that a job was scheduled for execution at 5 PM and the Scheduler was stopped five minutes before that time, at 4:55 PM. What would happen if you restarted the Scheduler at 5:05 PM? Would the Scheduler remember that it was supposed to fire the job at 5 PM? The answer is that it depends on which type of JobStore you're using and how you have it configured.


Scheduling in the Enterprise

Getting Started with Quartz

Hello, Quartz

Scheduling Jobs

Cron Triggers and More

JobStores and Persistence

Implementing Quartz Listeners

Using Quartz Plug-Ins

Using Quartz Remotely

Using Quartz with J2EE

Clustering Quartz

Quartz Cookbook

Quartz and Web Applications

Using Quartz with Workflow

Appendix A. Quartz Configuration Reference



Quartz Job Scheduling Framework(c) Building Open Source Enterprise Applications
Quartz Job Scheduling Framework: Building Open Source Enterprise Applications
ISBN: 0131886703
EAN: 2147483647
Year: N/A
Pages: 148

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