背景：近期在同步数据的使用到了redis的对账方法，处理起来高效，便捷。

public class TestRedis {
    @Autowired
    private RedisTemplate redisTemplate;

    public static final String  hashNameA = "test-data-hashNameA";
    public static final String  hashNameB = "test-data-hashNameB";
    public static final String  setNameA = "test-data-setNameA";
    public static final String  setNameB = "test-data-setNameB";

    public void test(){
        List<MinioUploadDto> listA = new ArrayList<>();
        List<MinioUploadDto> listB = new ArrayList<>();
        SetOperations setA = redisTemplate.opsForSet();
        SetOperations setB = redisTemplate.opsForSet();
        //处理listA listB
        for (MinioUploadDto minioUploadDto : listA) {
            String  keyA= minioUploadDto.getUrl() +"-" +minioUploadDto.getName();
            //将每条数据放到hash中
            redisTemplate.opsForHash().putIfAbsent(hashNameA,keyA,minioUploadDto);
            // 将key放到set中
            setA.add(setNameA,keyA);
        }
        for (MinioUploadDto minioUploadDto : listB) {
            String  keyB= minioUploadDto.getUrl() +"-" +minioUploadDto.getName();
            //将每条数据放到hash中
            redisTemplate.opsForHash().putIfAbsent(hashNameB,keyB,minioUploadDto);
            // 将key放到set中
            setB.add(setNameB,keyB);
        }
        
        /**
         * redis的对账
         */
        //得到listA中比listB多的数据
        Set<String> diffA = redisTemplate.opsForSet().difference(setNameA, setNameB);
        //得到listB中比listA多的数据
        Set<String> diffB = redisTemplate.opsForSet().difference(setNameA, setNameB);
        List<MinioUploadDto> addA = new ArrayList<>();
        List<MinioUploadDto> addB= new ArrayList<>();
        for (String s : diffA) {
            MinioUploadDto minioUploadDtoA = (MinioUploadDto) redisTemplate.opsForHash().get(hashNameA, s);
            addA.add(minioUploadDtoA);
        }
        for (String s : diffB) {
            MinioUploadDto minioUploadDtoB = (MinioUploadDto) redisTemplate.opsForHash().get(hashNameB, s);
            addA.add(minioUploadDtoB);
        }
        //END
    }