1.add(K key, V value, double score)
    添加元素到變量中同時(shí)指定元素的分值。
    redisTemplate.opsForZSet().add("zSetValue","A",1);
    2.rangeByScore(K key, double min, double max)
    根據(jù)設(shè)置的score獲取區(qū)間值。
    zSetValue = redisTemplate.opsForZSet().rangeByScore("zSetValue",1,2);
    3.rangeByScore(K key, double min, double max,long offset, long count)
    根據(jù)設(shè)置的score獲取區(qū)間值從給定下標(biāo)和給定長度獲取最終值。
    zSetValue = redisTemplate.opsForZSet().rangeByScore("zSetValue",1,5,1,3);
    4.rangeWithScores(K key, long start, long end)
    獲取RedisZSetCommands.Tuples的區(qū)間值。
    Set<ZSetOperations.TypedTuple<Object>> typedTupleSet = redisTemplate.opsForZSet().rangeWithScores("typedTupleSet",1,3);
    Iterator<ZSetOperations.TypedTuple<Object>> iterator = typedTupleSet.iterator();
    while (iterator.hasNext()){
        ZSetOperations.TypedTuple<Object> typedTuple = iterator.next();
        Object value = typedTuple.getValue();
        double score = typedTuple.getScore();
      }
    5.刪除成員
    redisTemplate.opsForZSet().remove("myZset","a","b");

/**
 * 延時(shí)隊(duì)列工廠
 *
 **/
@Slf4j
public abstract class AbstractDelayQueueMachineFactory {
    @Autowired
    private RedisUtil redisUtil;
    @Autowired
    private ThreadPoolTaskExecutor asyncTaskExecutor;
    /**
     * 插入任務(wù)id
     *
     * @param jobId 任務(wù)id(隊(duì)列內(nèi)唯一)
     * @param time  延時(shí)時(shí)間(單位 :毫秒)
     * @return 是否插入成功
     */
    public boolean addJob(String jobId, Integer time) {
        Calendar instance = Calendar.getInstance();
        //增加延時(shí)時(shí)間,獲取最終觸發(fā)時(shí)間
        instance.add(Calendar.MILLISECOND, time); 
        long delayMillisecond = instance.getTimeInMillis();
        log.info("延時(shí)隊(duì)列添加問題{}",jobId);
        return redisUtil.zAdd(setDelayQueueName(), delayMillisecond, jobId);
    }
    /**
     * 刪除任務(wù)id
     *
     * @param jobId 任務(wù)id(隊(duì)列內(nèi)唯一)
     */
    public boolean removeJob(String jobId) {
        Long num = redisUtil.zRemove(setDelayQueueName(), jobId);
        if (num > 0) return true;
        return false;
    }
    /**
     * 延時(shí)隊(duì)列機(jī)器開始運(yùn)作
     */
    private void startDelayQueueMachine() {
        log.info("延時(shí)隊(duì)列{}開始啟動(dòng)", setDelayQueueName());
        // 監(jiān)聽redis隊(duì)列
        while (true) {
            try {
                // 獲取當(dāng)前時(shí)間前的任務(wù)列表
                Set<ZSetOperations.TypedTuple<Object>> tuples = redisUtil.zRangeByScore(setDelayQueueName(), 0, System.currentTimeMillis() );
                // 如果任務(wù)不為空
                if (!CollectionUtils.isEmpty(tuples)) {
                    log.info("延時(shí)任務(wù)開始執(zhí)行:{}", JSONUtil.toJsonStr(tuples));
                    Iterator<ZSetOperations.TypedTuple<Object>> iterator = tuples.iterator();
                    while (iterator.hasNext()){
                        ZSetOperations.TypedTuple<Object> typedTuple = iterator.next();
                        String questionId = Convert.toStr(typedTuple.getValue());
                        // 移除緩存，如果移除成功則表示當(dāng)前線程處理了延時(shí)任務(wù)，則執(zhí)行延時(shí)任務(wù)
                        // 刪除成功才執(zhí)行延時(shí)任務(wù)，否則不執(zhí)行，這樣可以避免分布式系統(tǒng)延時(shí)任務(wù)多次執(zhí)行
                        Long num = redisUtil.zRemove(setDelayQueueName(), questionId);
                        // 如果移除成功, 則執(zhí)行
                        if (num > 0) {
                            asyncTaskExecutor.execute(() -> invoke(questionId));
                        }
                    }
                }
            } catch (Exception e) {
                log.error("處理延時(shí)任務(wù)發(fā)生異常,異常原因?yàn)閧}", e.getMessage(), e);
            } finally {
                // 間隔()分鐘執(zhí)行一次
                //根據(jù)業(yè)務(wù)場景設(shè)置對(duì)應(yīng)時(shí)間
                try {
                    TimeUnit.MINUTES.sleep(5);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
    /**
     * 最終執(zhí)行的任務(wù)方法
     *
     * @param jobId 任務(wù)id
     */
    public abstract void invoke(String jobId);
    /**
     * 要實(shí)現(xiàn)延時(shí)隊(duì)列的名字
     */
    public abstract String setDelayQueueName();
    //Spring Boot初始化時(shí)開啟一條線程運(yùn)行
    @PostConstruct
    public void init() {
        new Thread(this::startDelayQueueMachine).start();
    }
}

@Component
@Slf4j
public class RedisUtil {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
    /**
     * 向Zset里添加成員
     *
     * @param key   key值
     * @param score 分?jǐn)?shù)，通常用于排序
     * @param value 值
     * @return 增加狀態(tài)
     */
    public boolean zAdd(String key, long score, String value) {
        Boolean result = redisTemplate.opsForZSet().add(key, value, score);
        return result;
    }
    /**
     * 獲取 某key 下 某一分值區(qū)間的隊(duì)列
     *
     * @param key  緩存key
     * @param from 開始時(shí)間
     * @param to   結(jié)束時(shí)間
     * @return 數(shù)據(jù)
     */
    public Set<ZSetOperations.TypedTuple<Object>> zRangeByScore(String key, int from, long to) {
        Set<ZSetOperations.TypedTuple<Object>> set = redisTemplate.opsForZSet().rangeByScoreWithScores(key, from, to);
        return set;
    }
    /**
     * 移除 Zset隊(duì)列值
     *
     * @param key   key值
     * @param value 刪除的集合
     * @return 刪除數(shù)量
     */
    public Long zRemove(String key, String... value) {
        return redisTemplate.opsForZSet().remove(key, value);
    }
}

/**
 * 測試延時(shí)隊(duì)列
 *
 */
@Slf4j
@Component
public class DelayQueue extends AbstractDelayQueueMachineFactory {
    @Autowired
    private ZnjExpertConsultQuestionRecordMapper questionRecordMapper;
    /** 
     * 處理業(yè)務(wù)邏輯
     */ 
    @Override
    public void invoke(String jobId) {
        Integer questionId = Convert.toInt(jobId);
        ZnjExpertConsultQuestionRecordEntity questionRecordEntity = questionRecordMapper.selectById(questionId);
        Boolean flag = znjExpertConsultService.whetherEnd(questionRecordEntity);
   /** 
    * 延時(shí)隊(duì)列名統(tǒng)一設(shè)定
    */ 
    @Override
    public String setDelayQueueName() {
        return "expert_consult:delay_queue";
    }
}