redis 实现限流的三种方案

互联网产品接口离不开限流：尤其是高并发接口，今天我们分享一下，基于springboot 分享三种方案

一、基于redis 自增原理简单实现

 @Autowired
    StringRedisTemplate stringRedisTemplate;

     
    @Override
    public boolean limitKey(HttpServletRequest request) throws UnknownHostException {

        InetAddress address = InetAddress.getLocalHost();
        String checkedToken = request.getHeader("ND-TOKEN");
        Long uid = getUserid(checkedToken);
        String hostAddress = address.getHostAddress();
        String key = THROTTLE_KEY + hostAddress + "_" + uid + "_";
        log.debug("validation start key:" + key);
        String minKey = key + "min";
        long minTimes = stringRedisTemplate.opsForValue().increment(minKey, 1);
        if (minTimes <= 1) {
            stringRedisTemplate.expire(minKey, 1, TimeUnit.MINUTES);
        }
        String hou