redisson:
 # Redis服務地址 如果集群使用","進行分割
 server-address: redis://${spring.redis.host}:${spring.redis.port}
 database: ${spring.redis.database}

@ConfigurationProperties(prefix = "redisson")
@Configuration
public class RedissonConfig {
  /** Redis服務地址 如果集群使用","進行分割 */
  private String serverAddress;
  private Integer database;

  public String getServerAddress() {
    return serverAddress;
  }

  public void setServerAddress(String serverAddresss) {
    this.serverAddress = serverAddresss;
  }

  public Integer getDatabase() {
    return database;
  }

  public void setDatabase(Integer database) {
    this.database = database;
  }
}

/**
   * RedissonClient
   * @return
   */
  @Bean
  public RedissonClient redissonClient(){
    String splitChar = ",";
    String serverAddress = redissonConfig.getServerAddress();
    String[] serverAddressArr = serverAddress.split(splitChar);

    Config config = new Config();
    if (serverAddressArr.length == 1) {
      //單例redis
      config.useSingleServer()
          .setAddress(redissonConfig.getServerAddress())
          .setDatabase(redissonConfig.getDatabase());
    } else {
      //集群redis
      config.useClusterServers().addNodeAddress(serverAddressArr);
    }
    return Redisson.create(config);
  }

**
   * 初始化告警統計記錄 保證告警統計不會被重復初始化
   *
   * @param areaId 部門id
   * @throws BizException
   */
  public void initWarningStatisticsSafe(String areaId) throws BizException {
  //創建鎖名稱
    String lockName = generateInitWarningStatisticsLockName(areaId);

    RLock lock = redisClient.getLock(lockName);
    try {
      //嘗試獲取鎖 （最多嘗試10秒，獲取到后15秒后釋放鎖）
      boolean isAcquireLock = lock.tryLock(10, 15, TimeUnit.SECONDS);
      if (!isAcquireLock) {
        logger.error("初始化消息統計 --- 獲取鎖失敗 lockName = " + lockName);
        throw new BizException("系統異常");
      } else {

        try {
          //查詢【告警統計】 (能夠查詢到最新的數據，因為默認隔離級別是read committed
          ListWarningStatisticsPO> warningStatisticsPOS = warningStatisticsDAO.selectByArea(areaId);
          if (CollectionUtils.isEmpty(warningStatisticsPOS)) {
            //如果部門不存在告警統計，才進行初始化  initWarningStatistics()會開啟一個新事務
            warningStatisticsService.initWarningStatistics(areaId);
          }
        } finally {
          //釋放鎖 (在事務提交后才釋放鎖。保證其它事務在獲取鎖后能查詢到數據，不會再進行初始化。)
          lock.unlock();
        }

      }
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
  }