springboot @scheduled 并发
本文介绍如何使用springboot的sheduled实现任务的定时调度,并将调度的任务实现为并发的方式。
1、定时调度配置scheduled
1)注册定时任务
package com.xiaoju.dqa.sentinel.scheduler; import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component; @Component
public class Scheduler {
private static final Logger logger = LoggerFactory.getLogger(Scheduler.class); @Scheduled(cron = "0 0/2 * * * ?")
public void cronTask() {
long timestamp = System.currentTimeMillis();
try {
Thread thread = Thread.currentThread();
logger.info("cron任务开始, timestamp={}, threadId={}, threadName={}", timestamp, thread.getId(), thread.getName());
Thread.sleep(1000);
} catch (InterruptedException e) {
} } @Scheduled(fixedRate = 2 * 60 )
public void rateTask() {
long timestamp = System.currentTimeMillis();
try {
Thread thread = Thread.currentThread();
logger.info("fixedRate任务开始, timestamp={}, threadId={}, threadName={}", timestamp, thread.getId(), thread.getName());
Thread.sleep(1000);
} catch (InterruptedException e) {
}
} }
2)启动定时任务
package com.xiaoju.dqa.sentinel; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling; @Configuration
@EnableScheduling
@EnableAutoConfiguration
@ComponentScan
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
这里就介绍两种配置调度时间的方式:
1)cron表达式
2)fixedRate,调度频率也就是调度间隔
如下代码中设置的都是每两分钟调度一次。你只需要将任务用@Scheduled装饰即可。
我这里只写了两个调度任务,而且只sleep1s,如果你sleep 10s的话你就能清晰的看到,两个任务是串行执行的。
springboot中定时任务的执行时串行的!
开始把他改成并行的。
2、定时调度并行化
定时调度的并行化,线程池实现,非常简单,只需要添加一个configuration,实现SchedulingConfigurer接口就可以了。
package com.xiaoju.dqa.sentinel.configuration; import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar; import java.util.concurrent.Executor;
import java.util.concurrent.Executors; @Configuration
@EnableScheduling
public class ScheduleConfiguration implements SchedulingConfigurer { @Override
public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
taskRegistrar.setScheduler(taskExecutor());
} @Bean(destroyMethod="shutdown")
public Executor taskExecutor() {
return Executors.newScheduledThreadPool(100);
}
}
然后你重启服务,可以看到两个任务并行的执行起来。
3、将任务里的方法设置为异步
package com.xiaoju.dqa.sentinel.scheduler; import com.xiaoju.dqa.sentinel.service.AuditCollect;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component; @Component
public class Scheduler {
private static final Logger logger = LoggerFactory.getLogger(Scheduler.class); @Autowired
private AuditCollect auditCollect; @Scheduled(cron = "0 0/2 * * * ?")
public void cronTask() {
long timestamp = System.currentTimeMillis();
try {
Thread thread = Thread.currentThread();
logger.info("cron任务开始, timestamp={}, threadId={}, threadName={}", timestamp, thread.getId(), thread.getName());
auditCollect.doAuditCollect();
} catch (InterruptedException e) {
} } @Scheduled(fixedRate = 2 * 60 )
public void rateTask() {
long timestamp = System.currentTimeMillis();
try {
Thread thread = Thread.currentThread();
logger.info("fixedRate任务开始, timestamp={}, threadId={}, threadName={}", timestamp, thread.getId(), thread.getName());
auditCollect.doAuditCollect();
} catch (InterruptedException e) {
}
} }
比如这里有个函数执行的是数据收集,可以把他实现为异步的,并同样扔到线程池里并发的执行。
看看是怎么实现的。
package com.xiaoju.dqa.sentinel.service; import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.xiaoju.dqa.sentinel.client.es.ESDao;
import com.xiaoju.dqa.sentinel.client.es.entity.ESDocument;
import com.xiaoju.dqa.sentinel.client.es.entity.SearchDocument;
import com.xiaoju.dqa.sentinel.client.redis.RedisClient;
import com.xiaoju.dqa.sentinel.mapper.sentinel.SentinelMapper;
import com.xiaoju.dqa.sentinel.model.SentinelClan;
import com.xiaoju.dqa.sentinel.utils.ESSQLUtil;
import com.xiaoju.dqa.sentinel.utils.GlobalStaticConf;
import com.xiaoju.dqa.sentinel.utils.TimeFunction;
import org.elasticsearch.search.SearchHit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component; import java.math.BigDecimal;
import java.util.*; @Component
public class AuditCollect {
protected final Logger logger = LoggerFactory.getLogger(this.getClass()); @Async("sentinelSimpleAsync")
public void doAuditCollect(JSONObject clanObject, long currentTime) {
JSONArray topicArray = clanObject.getJSONArray("families");
// 遍历所有的topic
for (int j = 0; j < topicArray.size(); j++) {
JSONObject topicObject = topicArray.getJSONObject(j);
audit(clanObject, topicObject, currentTime);
}
}
}
可以看到只是用@Async注释一下,并且加入了异步的executor=sentinelSimpleAsync。
SentinelSimpleAsync是我们自己实现来定制化线程池的。
package com.xiaoju.dqa.sentinel.configuration; import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor; import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor; @Configuration
@EnableAsync
public class ExecutorConfiguration { @Value("${executor.pool.core.size}")
private int corePoolSize;
@Value("${executor.pool.max.size}")
private int maxPoolSize;
@Value("${executor.queue.capacity}")
private int queueCapacity; @Bean
public Executor sentinelSimpleAsync() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(corePoolSize);
executor.setMaxPoolSize(maxPoolSize);
executor.setQueueCapacity(queueCapacity);
executor.setThreadNamePrefix("SentinelSimpleExecutor-");
executor.initialize();
return executor;
} @Bean
public Executor sentinelAsync() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(corePoolSize);
executor.setMaxPoolSize(maxPoolSize);
executor.setQueueCapacity(queueCapacity);
executor.setThreadNamePrefix("SentinelSwapExecutor-"); // rejection-policy:当pool已经达到max size的时候,如何处理新任务
// CALLER_RUNS:不在新线程中执行任务,而是有调用者所在的线程来执行
executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
executor.initialize();
return executor;
}
}
配置文件如下:
#============== 线程池 ===================
executor.pool.core.size=100
executor.pool.max.size=150
executor.queue.capacity=2000
想让异步生效的话,只需要在application类上加上EnableAsync注释就好了。
package com.xiaoju.dqa.sentinel; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.annotation.EnableKafka;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling; @Configuration
@EnableScheduling
@EnableAutoConfiguration
@EnableAsync
@ComponentScan
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
springboot @scheduled 并发的更多相关文章
- springboot scheduled并发配置
本文介绍如何使用springboot的sheduled实现任务的定时调度,并将调度的任务实现为并发的方式. 1.定时调度配置scheduled 1)注册定时任务 package com.xiaoju. ...
- springboot + @scheduled 多任务并发
一.问题 项目采用springboot搭建,想给方法添加@Scheduled注解,实现两个定时任务.可是运行发现,两个task并没有并发执行,而是执行完一个task才会执行另外一个.上代码: pack ...
- SpringBoot中并发定时任务的实现、动态定时任务的实现(看这一篇就够了)
原创不易,如需转载,请注明出处https://www.cnblogs.com/baixianlong/p/10659045.html,否则将追究法律责任!!! 一.在JAVA开发领域,目前可以通过以下 ...
- spring @Scheduled 并发
一.spring定时任务配置 applicationContext.xml:红色代码部分为需要配置的部分. <?xml version="1.0" encoding=&quo ...
- 集群服务器下使用SpringBoot @Scheduled注解定时任务
原文:https://blog.csdn.net/huyang1990/article/details/78551578 SpringBoot提供了 Schedule模块完美支持定时任务的执行 在实际 ...
- springboot高并发redis细粒度加锁(key粒度加锁)
本文探讨在web开发中如何解决并发访问带来的数据同步问题. 1.需求: 通过REST接口请求并发访问redis,例如:将key=fusor:${order_id} 中的值+1: 2.场景: 设想,多线 ...
- Java SpringBoot Scheduled定时任务
package task.demo.controller; import org.springframework.beans.factory.annotation.Autowired; import ...
- Spring Boot 内置定时任务
启用定时任务 @SpringBootApplication @EnableScheduling // 启动类添加 @EnableScheduling 注解 public class ScheduleD ...
- Java应用多机器部署定时任务解决方案
Java多机部署下定时任务的处理方案. 本文转自:http://www.cnblogs.com/xunianchong/p/6958548.html 需求: 有两台服务器同时部署了同一套代码, 代码中 ...
随机推荐
- C++学习(三十九)(C语言部分)之 游戏项目(2048游戏)
/***************************项目 2048**********************c语言编写 图形库制作时间:2019.04.03 准备工具: vs2013 图形库 i ...
- Vue创建头部组件示例
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta ht ...
- windows server 2008 R2之tomcat开机自启
方法一: 写一个批处理文件autostartup.bat用来启动tomcat,内容如下.复制时不要把复制内容也复制进去 set CATALINA_HOME=C:\apache-tomcat-8.5.3 ...
- cliipblard.js 实现点击复制
<script src="js/clipboard.min.js"></script> <script type="text/javascr ...
- Linux which命令详解
Linux which命令 Linux which命令用于查找文件. which指令会在环境变量$PATH设置的目录里查找符合条件的文件 用法: which [options] [--] COMMAN ...
- InnoDB引擎体系架构
InnoDB引擎架构介绍 innodb存储引擎的体系架构,可简单划分成三层: 数据文件 :磁盘上的数据文件 内存池:缓存磁盘上的数据,方便读取,同时在对磁盘文件数据修改之前在这里缓存,然后按一定规刷新 ...
- requests库(爬虫)
北京理工大学嵩天老师的课程:http://www.icourse163.org/course/BIT-1001870001 官方文档:http://docs.python-requests.org/e ...
- Android批量验证渠道、版本号(Linux版)
功能:可校验单个或目录下所有apk文件的渠道号.版本号(Linux版本)使用说明:1.copy需要校验的apk文件到VerifyChannelVersion目录下2../VerifyChannelVe ...
- Python日志模块logging&JSON
日志模块的用法 json部分 先开一段测试代码:注意 str可以直接处理字典 eval可以直接将字符串转成字典的形式 dic={'key1':'value1','key2':'value2'} ...
- C++Primer第五版——习题答案详解(十)
习题答案目录:https://www.cnblogs.com/Mered1th/p/10485695.html 第11章 关联容器 练习11.3 #include<iostream> #i ...