package com.genersoft.iot.vmp.conf; import org.apache.commons.lang3.concurrent.BasicThreadFactory; import org.springframework.context.annotation.Configuration; import org.springframework.scheduling.annotation.SchedulingConfigurer; import org.springframework.scheduling.config.ScheduledTaskRegistrar; import java.util.concurrent.ScheduledThreadPoolExecutor; import java.util.concurrent.ThreadPoolExecutor; /** * "@Scheduled"是Spring框架提供的一种定时任务执行机制,默认情况下它是单线程的,在同时执行多个定时任务时可能会出现阻塞和性能问题。 * 为了解决这种单线程瓶颈问题,可以将定时任务的执行机制改为支持多线程 */ @Configuration public class ScheduleConfig implements SchedulingConfigurer { public static final int cpuNum = Runtime.getRuntime().availableProcessors(); private static final int corePoolSize = cpuNum; private static final String threadNamePrefix = "scheduled-task-pool-%d"; @Override public void configureTasks(ScheduledTaskRegistrar taskRegistrar) { taskRegistrar.setScheduler(new ScheduledThreadPoolExecutor(corePoolSize, new BasicThreadFactory.Builder().namingPattern(threadNamePrefix).daemon(true).build(), new ThreadPoolExecutor.CallerRunsPolicy())); } }