public void saveRedis(String key, String value, Long expireSecond) { boolean keyExist = jedisCluster.exists(key); // NX是不存在时才set, XX是存在时才set, EX是秒,PX是毫秒 if (keyExist) { jedisCluster.del(key); } jedisCluster.set(key, value, "NX", "EX", expireSecond); }