CHAPTER 11Batch Processing
Grails is more than just a web framework—it is an application framework. And almost all applications contain functionality that must be executed on a periodic basis (every 15 minutes, once an hour, twice a day, daily, weekly, month, quarterly, yearly). This is known as batch processing.
The Grails team anticipated the need for batch processing and decided to leverage a popular open source third-party enterprise job scheduling library: Quartz,1 from OpenSymphony. Since the Spring Framework is a core component of Grails, and the Spring Framework already includes a Quartz integration, this was a natural choice. A Quartz Grails plug-in makes it easy to use the Quartz library.
Quartz is similar to the Unix cron facility ...
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