spring 定时任务@Scheduled 讲解

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spring 定时任务@Scheduled ，默认一个进程里，所有的@Scheduled 定时任务都在同一个线程中运行。即单线程模式

若要修改为多线程模式，需要加一个配置，如下：

@Configuration
public class ScheduleConfig implements SchedulingConfigurer {

    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        AtomicInteger autoCount = new AtomicInteger(1);

        ScheduledThreadPoolExecutor scheduledExecutorService = new ScheduledThreadPoolExecutor(10
                , runnable -> new Thread(runnable, "schedule-task-" + autoCount.getAndIncrement()));
        scheduledExecutorService.setMaximumPoolSize(10);

        taskRegistrar.setScheduler(scheduledExecutorService);
    }
}