Quartz
Quartz is a full-featured, open source job scheduling service that can be integrated with, or used along side virtually any Java EE or Java SE application - from the smallest stand-alone application to the largest e-commerce system. Quartz can be used to create simple or complex schedules for executing tens, hundreds, or even tens-of-thousands of jobs; jobs whose tasks are defined as standard Java components that may executed virtually anything you may program them to do. The Quartz Scheduler includes many enterprise-class features, such as JTA transactions and clustering.
If your system has recurring maintenance jobs then Quartz may be your ideal solution.
Its major features include:
- Job Scheduling, Jobs are scheduled to run when a given Trigger occurs
- Job Execution
- Job Persistence
- Quartz can participate in JTA transactions
- Supports Fail-over, Load Balancing
http://www.quartz-scheduler.org/
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