"@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… (b726dc97) | Commits | guzijian / wvp-GB28181-pro

Authored by xubinbin 2023-05-10 15:38:22 +0800

…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

Showing 1 changed file with 30 additions and 0 deletions

src/main/java/com/genersoft/iot/vmp/conf/ScheduleConfig.java 0 → 100644

	1	+package com.genersoft.iot.vmp.conf;
	2	+
	3	+import org.apache.commons.lang3.concurrent.BasicThreadFactory;
	4	+import org.springframework.context.annotation.Configuration;
	5	+import org.springframework.scheduling.annotation.SchedulingConfigurer;
	6	+import org.springframework.scheduling.config.ScheduledTaskRegistrar;
	7	+
	8	+import java.util.concurrent.ScheduledThreadPoolExecutor;
	9	+import java.util.concurrent.ThreadPoolExecutor;
	10	+
	11	+/**
	12	+ * "@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。
	13	+ * 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
	14	+ */
	15	+@Configuration
	16	+public class ScheduleConfig implements SchedulingConfigurer {
	17	+
	18	+ public static final int cpuNum = Runtime.getRuntime().availableProcessors();
	19	+
	20	+ private static final int corePoolSize = cpuNum;
	21	+
	22	+ private static final String threadNamePrefix = "scheduled-task-pool-%d";
	23	+
	24	+ @Override
	25	+ public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
	26	+ taskRegistrar.setScheduler(new ScheduledThreadPoolExecutor(corePoolSize,
	27	+ new BasicThreadFactory.Builder().namingPattern(threadNamePrefix).daemon(true).build(),
	28	+ new ThreadPoolExecutor.CallerRunsPolicy()));
	29	+ }
	30	+}
...	...

guzijian / wvp-GB28181-pro · Commits