code: public void shutdown() {
          if (clientList == null) {
              return;
          }
          cancelEvictor();
          for (RedisClient connection : clientList) {
              try {
                  connection.shutdown();
              } catch (Exception e) {
                  logger.debug(e.getMessage(), e);
              }
          }
      }
docs: 关闭管理器中维护的redis列表的连接池