redisson实现延迟队列

烁雨

已于 2024-02-22 10:30:38 修改

阅读量682

点赞数 2

CC 4.0 BY-SA版权

于 2024-02-21 20:52:51 首次发布

本文链接：https://blog.youkuaiyun.com/k_x_sh/article/details/136220430

java 专栏收录该内容

25 篇文章

订阅专栏

本文介绍了如何在SpringBoot项目中通过POM引入Redisson库，配置并使用Redis的队列(RBlockingQueue和RDelayedQueue)进行任务延迟执行，以及创建和测试相关的服务类和控制器接口。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1.pom引入redisson

        <dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson</artifactId>
            <version>3.20.1</version>
        </dependency>

整合springboot配置，这个可以参考之前整合redisson的文章，或者上面一步直接引用
redisson整合好的springboot的包如下(本人是引入的redisson自己整合的springboot，实际一样的
只要redisson可以使用，就成功)

<dependency>
    <groupId>org.redisson</groupId>
    <artifactId>redisson-spring-boot-starter</artifactId>
    <version>3.27.0</version>
</dependency>

3.配置redis的队列

import org.redisson.api.RBlockingQueue;
import org.redisson.api.RDelayedQueue;
import org.redisson.api.RedissonClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @email 1965654634@qq.com
 */
@Configuration
public class RedisQueueConfig {

    @Bean
    public RBlockingQueue<String> blockingQueue(RedissonClient redissonClient) {
        //队列名称可以自己定义
        return redissonClient.getBlockingQueue("delayedQueue");
    }

    @Bean
    public RDelayedQueue<String> delayedQueue(RBlockingQueue<String> blockingQueue,
                                              RedissonClient redissonClient) {
        return redissonClient.getDelayedQueue(blockingQueue);
    }
}

4.创建redis的队列类


import cn.hutool.core.date.LocalDateTimeUtil;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RBlockingQueue;
import org.redisson.api.RDelayedQueue;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.annotation.PostConstruct;
import java.time.LocalDateTime;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;


/**
 * @email 1965654634@qq.com
 */
@Slf4j
@Service
public class DelayedQueueService{

    @Autowired
    private RDelayedQueue<String> delayedQueue;
    @Autowired
    private  RBlockingQueue<String> blockingQueue;

    @PostConstruct
    public void init() {
        // 创建延迟队列
        ExecutorService executorService = Executors.newFixedThreadPool(1);
        executorService.submit(() -> {
            while (true) {
                try {
                    // 从延迟队列中取出任务
                    String task = blockingQueue.take();
                    // 处理延迟任务，例如执行某个操作
                    log.info("redis的延迟队列:{},当前时间:{}", task, LocalDateTimeUtil.formatNormal(LocalDateTime.now()));
                } catch (Exception e) {
                    log.error("redis的延迟队列抛出异常", e);
                }
            }
        });
    }

    public String addDelayedTask(String task, long delay) {
        log.info("redis的延迟队列(添加)的key:{},time:{},当前时间:{}",task,delay, LocalDateTimeUtil.formatNormal(LocalDateTime.now()));
        // 将任务加入延迟队列
        delayedQueue.offerAsync(task, delay, TimeUnit.SECONDS);
        // 返回任务的唯一标识
        return task;
    }

    public void cancelDelayedTask(String task) {
        log.info("redis的延迟队列(移除)的key:{},当前时间:{}",task, LocalDateTimeUtil.formatNormal(LocalDateTime.now()));
        // 从延迟队列中移除任务
        delayedQueue.remove(task);
    }
}

5.测试controller

    @PostMapping("/queueAdd")
    public ResponseResult<Boolean> queueAdd(String task,Long time){
        log.info("测试添加的key:{},time:{},当前时间:{}",task,time, LocalDateTimeUtil.formatNormal(LocalDateTime.now()));
        delayedQueueService.addDelayedTask(task,time);
        return ResponseResult.ok();
    }

    @PostMapping("/queueDel")
    public ResponseResult<Boolean> dianTiAlarm(String task,Long time){
        log.info("测试删除的key:{},time:{},当前时间:{}",task,time, LocalDateTimeUtil.formatNormal(LocalDateTime.now()));
        delayedQueueService.cancelDelayedTask(task);
        return ResponseResult.ok();
    }