[redis] sorted set 커맨드

레디스의 z계열 커맨드가 어떻게 동작하는지 까먹어서 공부를 했다.

127.0.0.1:6379> zadd number 1000 samuel

(integer) 1

127.0.0.1:6379> zadd number 2000 matt

(integer) 1

127.0.0.1:6379> zadd number 3000 jonathan

(integer) 1

zscore는 스코어를 본다.

127.0.0.1:6379> zscore number jonathan

"3000"

127.0.0.1:6379> zscore number samuel

"1000"

zrange 커맨드 (-1 매개 변수는  마지막)

127.0.0.1:6379> zrange number 0 100

1) "samuel"

2) "matt"

3) "jonathan"

127.0.0.1:6379> zrange number 0 -1

1) "samuel"

2) "matt"

3) "jonathan"

127.0.0.1:6379> zrange number 0 1

1) "samuel"

2) "matt"

점수도 함께 표현 (withscores)

127.0.0.1:6379> zrange number 0 -1 withscores

1) "samuel"

2) "1000"

3) "matt"

4) "2000"

5) "jonathan"

6) "3000"

zrem은 삭제

127.0.0.1:6379> zrem number "matt"

(integer) 1

127.0.0.1:6379> zrange number 0 -1 withscores

1) "samuel"

2) "1000"

3) "jonathan"

4) "3000"

zrangebyscore 스코어로 범위 지정하는 커맨드

127.0.0.1:6379> zrangebyscore number 3000 4000

1) "jonathan"

zounct는 score 범위로 몇개가 있는 계산하는 커맨드 (-inf:음의 무한대, +inf: 양의 무한대)

127.0.0.1:6379> zrange number 0 -1

1) "samuel"

2) "jonathan"

127.0.0.1:6379> zcount number -inf +inf

(integer) 2

127.0.0.1:6379> zcount number 0 4000

(integer) 2

127.0.0.1:6379> zcount number -inf 1000

(integer) 1

zrangebylex는 member로 범위 지정

127.0.0.1:6379> zadd number  5000 jack

(integer) 1

127.0.0.1:6379> zadd number  6000 soa

(integer) 1

127.0.0.1:6379> zrangebylex number - +

1) "samuel"

2) "jonathan"

3) "jack"

4) "soa"

127.0.0.1:6379> zrangebylex number "[soa" +

1) "soa"

zlexcount는 zrangebylex와 같이 개수 구하는 커맨드

127.0.0.1:6379> zlexcount number - +

(integer) 4

127.0.0.1:6379> zlexcount number "[soa" +

(integer) 1

zrangebyscore는 스코어를 기반으로 값을 검색한다.

127.0.0.1:6379> zrangebyscore  number -inf inf

1) "samuel"

2) "jonathan"

3) "jack"

4) "soa"

127.0.0.1:6379> zrangebyscore  number -inf inf  withscores

1) "samuel"

2) "1000"

3) "jonathan"

4) "3000"

5) "jack"

6) "5000"

7) "soa"

8) "6000"

127.0.0.1:6379> zrangebyscore  number -inf 5000 withscores

1) "samuel"

2) "1000"

3) "jonathan"

4) "3000"

5) "jack"

6) "5000"

127.0.0.1:6379> zrangebyscore  number -inf (4000 withscores

1) "samuel"

2) "1000"

3) "jonathan"

4) "3000"

127.0.0.1:6379> zrangebyscore  number 100 3000 withscores

1) "samuel"

2) "1000"

3) "jonathan"

4) "3000"

zremrnagebyrank는 스코어 단위로 삭제한다. 

127.0.0.1:6379> zrangebyscore  number -inf inf  withscores

1) "samuel"

2) "1000"

3) "jonathan"

4) "3000"

5) "jack"

6) "5000"

7) "soa"

127.0.0.1:6379> zremrangebyrank number 1 1

(integer) 1

127.0.0.1:6379> zrange number 0 -1

1) "samuel"

2) "jack"

3) "soa"

zremrangebylex는 zrangebylex 기반과 비슷하며 삭제한다. 

127.0.0.1:6379> zrangebylex number - +

1) "samuel"

2) "jack"

3) "soa"

127.0.0.1:6379> zrangebylex number "(jack" "(soa"

1) "samuel"

2) "jack"

127.0.0.1:6379> zremrangebylex number "(jack" "(soa"

(integer) 2

127.0.0.1:6379> zrangebylex number - +

1) "soa"

다시 재구성한 한 후.. zremrangebylex 3 -1 는 3개 빼고 다 삭제한다.  zremrangebylex 1 -1 는 1개 빼고 다 삭제한다. 

127.0.0.1:6379> zrevrange number 0 -1 withscores

1) "soa"

2) "6000"

3) "jonathan"

4) "3000"

5) "matt"

6) "2000"

7) "samuel"

8) "1000"

127.0.0.1:6379> zremrangebyrank number 3 -1

(integer) 1

127.0.0.1:6379> zrevrange number 0 -1 withscores

1) "jonathan"

2) "3000"

3) "matt"

4) "2000"

5) "samuel"

6) "1000"

127.0.0.1:6379> zremrangebyrank number 1 -1

(integer) 2

127.0.0.1:6379> zrevrange number 0 -1 withscores

1) "samuel"

2) "1000"

일부러 음수로 저장하면 또 다른 의미로 rank로 최신 데이터만 가져올 수 있다.

127.0.0.1:6379> zadd feed -900 1st

(integer) 1

127.0.0.1:6379> zadd feed -950 2nd

(integer) 1

127.0.0.1:6379> zadd feed -955 3rd

(integer) 1

127.0.0.1:6379> zrevrange feed 0 -1 withscores

1) "1st"

2) "-900"

3) "2nd"

4) "-950"

5) "3rd"

6) "-955"

127.0.0.1:6379> zremrangebyrank feed 2 -1

(integer) 1

127.0.0.1:6379> zrevrange feed 0 -1 withscores

1) "2nd"

2) "-950"

3) "3rd"

4) "-955"

zrank는 오름차순 순서를 보여준다.

127.0.0.1:6379> zrange number 0 -1 withscores

1) "samuel"

2) "1000"

3) "matt"

4) "2000"

5) "jonathan"

6) "3000"

7) "soa"

8) "6000"

127.0.0.1:6379> zrank number "jonathan"

(integer) 2

127.0.0.1:6379> zrank number "soa"

(integer) 3

점수 높은것부터 보려면 zrevrank를 호출한다.

127.0.0.1:6379> zrevrange number 0 -1 withscores

1) "soa"

2) "6000"

3) "jonathan"

4) "3000"

5) "matt"

6) "2000"

7) "samuel"

8) "1000"

127.0.0.1:6379> zrevrank number "soa"

(integer) 0

127.0.0.1:6379> zrevrank number "samuel"

(integer) 3