"@schedule"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执行,项目中多次使用fixedRate按指定频率执行任务(不管前面任务是否已经完成),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,将定时任务的执行机制改为支持多线程

pull/847/head
xubinbin 2023-05-10 15:38:22 +08:00
parent ccecda7859
commit b726dc9753
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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"Spring线
* 线线
*/
@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()));
}
}