（仿牛客社区项目）Java开发笔记7.3：Redis高级数据类型

Redis高级数据类型

1.添加测试类

在RedisTests类添加testHyperLogLog，testHyperLogLogUnion，testBitMap，testBitMapOperation方法。

 //统计20万个重复数据的独立总数
    @Test
    public void testHyperLogLog(){
        String redisKey="test:h11:01";

        for(int i=1;i<=100000;i++){
            redisTemplate.opsForHyperLogLog().add(redisKey,i);
        }
        for(int i=1;i<=100000;i++){
            int r=(int)(Math.random()*100000+1);
            redisTemplate.opsForHyperLogLog().add(redisKey,r);
        }

        long size=redisTemplate.opsForHyperLogLog().size(redisKey);
        System.out.println(size);
    }

    //将三组数据合并，再统计合并后的重复数据的独立总数
    @Test
    public void testHyperLogLogUnion(){
        String redisKey2="test:h11:02";
        for(int i=1;i<=10000;i++){
            redisTemplate.opsForHyperLogLog().add(redisKey2,i);
        }
        String redisKey3="test:h11:03";
        for(int i=5001;i<=15000;i++){
            redisTemplate.opsForHyperLogLog().add(redisKey3,i);
        }
        String redisKey4="test:hll:04";
        for(int i=10000;i<=20000;i++) {
            redisTemplate.opsForHyperLogLog().add(redisKey4,i);
        }

        String unionKey="test:hll:union";
        redisTemplate.opsForHyperLogLog().union(unionKey,redisKey2,redisKey3,redisKey4);

        long size=redisTemplate.opsForHyperLogLog().size(unionKey);

        System.out.println(size);
    }

    // 统计一组数据的布尔值
    @Test
    public void testBitMap() {
        String redisKey = "test:bm:01";

        // 记录
        redisTemplate.opsForValue().setBit(redisKey, 1, true);
        redisTemplate.opsForValue().setBit(redisKey, 4, true);
        redisTemplate.opsForValue().setBit(redisKey, 7, true);

        // 查询
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 0));
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 1));
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 2));

        // 统计
        Object obj = redisTemplate.execute(new RedisCallback() {
            @Override
            public Object doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.bitCount(redisKey.getBytes());
            }
        });

        System.out.println(obj);
    }

    // 统计3组数据的布尔值, 并对这3组数据做OR运算.
    @Test
    public void testBitMapOperation() {
        String redisKey2 = "test:bm:02";
        redisTemplate.opsForValue().setBit(redisKey2, 0, true);
        redisTemplate.opsForValue().setBit(redisKey2, 1, true);
        redisTemplate.opsForValue().setBit(redisKey2, 2, true);

        String redisKey3 = "test:bm:03";
        redisTemplate.opsForValue().setBit(redisKey3, 2, true);
        redisTemplate.opsForValue().setBit(redisKey3, 3, true);
        redisTemplate.opsForValue().setBit(redisKey3, 4, true);

        String redisKey4 = "test:bm:04";
        redisTemplate.opsForValue().setBit(redisKey4, 4, true);
        redisTemplate.opsForValue().setBit(redisKey4, 5, true);
        redisTemplate.opsForValue().setBit(redisKey4, 6, true);

        String redisKey = "test:bm:or";
        Object obj = redisTemplate.execute(new RedisCallback() {
            @Override
            public Object doInRedis(RedisConnection connection) throws DataAccessException {
                connection.bitOp(RedisStringCommands.BitOperation.OR,
                        redisKey.getBytes(), redisKey2.getBytes(), redisKey3.getBytes(), redisKey4.getBytes());
                return connection.bitCount(redisKey.getBytes());
            }
        });

        System.out.println(obj);

        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 0));
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 1));
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 2));
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 3));
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 4));
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 5));
        System.out.println(redisTemplate.opsForValue().getBit(redisKey, 6));
    }

2.测试结果

testHyperLogLog:

testHyperLogLogUnion:

testBitMap:

testBitMapOperation: