参考资料 http://www.cnblogs.com/zemliu/p/3928285.htmlhttp://blog.csdn.net/yq76034150/article/details/678339810w定时任务，如何高效触发超时【58架构师】http://www.jianshu.com/p/db138d40c3c5

序 本文主要研究一下PowerJob的HashedWheelTimer Timer tech/powerjob/server/common/timewheel/Timer.java public interface Timer {/*** 调度定时任务*/TimerFuture schedule(TimerTask task, long delay, TimeUnit unit);/***