How to prevent repeated submission of new orders

        The last article wrote idempotent anti shake to prevent repeated submissions , It can effectively prevent continuous click submission , But now there is a situation , The submitted data processing return timeout is caused by the slow network or background server , Wait a little bit 1 Submit minutes or even minutes later , Idempotent anti shake does not work , Order generation multiple times .

        To solve this problem , When I entered the order page, I requested a UUID, Unless you re-enter the page UUID It won't change , Then submit with this UUID To request , If REIDS Should be UUID If there is a duplicate request , There is no such thing as the background will receive UUID Deposit in REDIS in , If the processing fails, you still need to remove this KEY.

The reference codes are as follows ：

String key= MessageFormat.format("INSERT:HYKCZD:{0}:{1}",vo.getTenantId(),vo.getDjbh());
        if(redisService.haskey(key)) throw new BusinessException(" This page request has been processed , Do not submit again ");
        redisService.setCacheObject(key,vo.getZdr()+"-"+getDateTime(),7, TimeUnit.DAYS);
        PosVipCzsz czsz=czszMapper.selectById(vo.getCzszId());
        if(czsz.getType()==0){
            vo.setJe1(czsz.getJe2());
            vo.setJe2(czsz.getJe());
            vo.setJe3(czsz.getJe1());
        }else{
            validObjectParam(vo, VpczdVO.class, "je2","je3");
            Double je1=add(vo.getJe2(), vo.getJe3());
            vo.setJe1(je1);
        }
        String host=getHost(),url="pos/vpczd/cz",json= JSON.toJSONString(vo);
        JsonResult jsonResult= doGetJsonResult$post(host, url, json);
        if(!jsonResult.isSuccess()) {
            redisService.deleteObject(key);
            throw new DataIntefaceException(jsonResult.getMsg());
        }
        return 1;