Redis实现延时队列

缓存队列延时向接口报工，并支持多实例部署。

引入依赖

  org.redisson
  redisson-spring-data
  3.17.4

注入RedisClient

import org.springframework.util.StringUtils;
import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.redisson.config.SingleServerConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RedissonConfig {
    @Value("${spring.redis.host}")
    private String host;
    @Value("${spring.redis.port}")
    private String port;
    @Value("${spring.redis.password}")
    private String password;
    @Value("${spring.redis.database}")
    private Integer database;
    @Bean()
    public RedissonClient redissonClient() {
        Config config = new Config();
        SingleServerConfig serversConfig = config.useSingleServer();
        serversConfig.setAddress("redis://" + host + ":" + port);
        if (!StringUtils.isEmpty(password)){
            serversConfig.setPassword(password);
        }
        serversConfig.setDatabase(database);
        return Redisson.create(config);
    }
}

注入延时队列Bean

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

/**
 * @author
 * redisson延迟队列
 */
@Configuration
public class RedissonQueueConfig {

    @Bean
    public RBlockingQueue rBlockingQueue(@Qualifier("redissonClient") RedissonClient redissonClient) {
        String queueName = "queue";
        return redissonClient.getBlockingQueue(queueName);
    }

    @Bean(name = "rDelayedQueue")
    public RDelayedQueue rDelayedQueue(@Qualifier("redissonClient") RedissonClient redissonClient,
                                               @Qualifier("rBlockingQueue") RBlockingQueue blockQueue) {
        return redissonClient.getDelayedQueue(blockQueue);
    }
}

编写方法

import java.util.concurrent.TimeUnit;

/**
 * @author
 */
public interface DelayQueue {

    /**
     * 发布
     *
     * @param object
     * @return
     */
    Boolean offer(Object object);

    /**
     * 带延迟功能的队列
     *
     * @param object
     * @param time
     * @param timeUnit
     */
    void offer(Object object, Long time, TimeUnit timeUnit);

    void offerAsync(Object object, Long time, TimeUnit timeUnit);

    Boolean offerAsync(Object object);
}


import org.redisson.api.RDelayedQueue;
import org.redisson.api.RFuture;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;

/**
 * @author
 */
@Component
public class RedissonDelayQueue implements DelayQueue {

    private static Logger log = LoggerFactory.getLogger(RedissonDelayQueue.class);

    @Resource(name = "rDelayedQueue")
    private RDelayedQueue