This article explains an alternative method for implementing TCP's retransmission timer based on a timer wheel algorithm.
本文说明了基于计时器轮算法实现TCP的重新传输计时器的一种备选方法。
The timer service also supports the automatic creation of a timer based on metadata in the bean class or deployment descriptor.
定时器服务也支持通过bean的元数据或者部署描述符自动创建定时器。
Most significant in this area is support for cron-style scheduling in addition to the EJB 3.0 interval based timer API.
除 EJB 3.0 基于间隔的计时器 API 外，这个领域最重大的改进是对 cron 风格调度的支持。
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