Redis database Operations (3)

Set type

To add an element to an unordered collection:
sadd KEY VALUE1 VALUE2 VALUE3 Example: (Sadd my_set1 a b c D D c s a)

To get the elements of an unordered collection:
smembers KEY Example: (Smembers my_set1)
Results:
1) "C"
2) "S"
3) "A"
4) "D"
5) "B"

To delete a specified element in an unordered collection:
Srem KEY VALUE Example: (Srem My_set1 a)
Query results by Smembers My_set1:
1) "C"
2) "S"
3) "D"
4) "B"

To delete a random element in an unordered collection:
Spop KEY VALUE Example: (Spop my_set1)
Query results by Smembers My_set1:
1) "C"
2) "S"
3) "B"

Move an element of a collection to another collection:
smove src_key Dst_key VALUE Example: (Smove my_set1 My_set2 s)
Query results by Smembers My_set1:
1) "C"
2) "B"
Query results by Smembers My_set2:
1) "S"

Determine whether a collection has an element:
sismember KEY VALUE Example: (Sismember My_set1 B)

Intersection:
sinter KEY1 KEY2
Cases:
Sadd My_set1 a b c d E
Sadd My_set2 C d E F g
Sinter My_set1 My_set2
Results:
1) "C"
2) "D"
3) "E"

Merge the intersection of the KEY1 KEY2 into the KEY3:
Sinterstore KEY3 KEY1 KEY2
Cases:
Sinterstore My_set3 My_set1 My_set2
Query results by Smembers My_set3:
1) "D"
2) "C"
3) "E"

and set:
sunion KEY1 KEY2
Cases:
Sunion My_set1 My_set2
Results:
1) "G"
2) "C"
3) "S"
4) "D"
5) "A"
6) "F"
7) "E"
8) "B"

Merge the Union of the KEY1 KEY2 into the KEY3:
Sunionstore KEY3 KEY1 KEY2
Cases:
Sunionstore My_set3 My_set1 My_set2
Query results by Smembers My_set3:
1) "G"
2) "C"
3) "S"
4) "D"
5) "A"
6) "F"
7) "E"
8) "B"

Difference set: (in Set 1, remove the elements in set 2, leaving the set 2 without, only in the collection 1 elements)
Sdiff KEY1 KEY2
Cases:
Sdiff My_set1 My_set2
Results:
1) "A"
2) "B"

Merge the difference set of KEY1 KEY2 to KEY3:

Sdiffstore KEY3 KEY1 KEY2
Cases:
Sdiffstore My_set3 My_set2 My_set1
Query results by Smembers My_set3:
1) "G"
2) "F"
3) "S"

Gets the number of elements in the collection:
SCard KEY
Cases:
SCard My_set1

Randomly returns an element in the collection:
Srandmember KEY
Cases:
Srandmember My_set1

Zset type

To add an element to an ordered collection:
Zadd KEY score VALUE
Cases:
Zadd my_zset 1 ' one '
Zadd My_zset 2 '
Zadd My_zset 3 ' three '
Zadd My_zset 4 ' four '
Zadd my_zset 5 ' five '

To get the elements in an ordered collection:
Zrange KEY START STOP (withscores)
Cases:
Zrange My_zset 0-1
Results:
1) "One"
2) "Both"
3) "Three"
4) "Four"
5) "Five"
Cases:
Zrange My_zset 0 3 withscores
Results:
1) "One"
2) "1"
3) "Both"
4) "2"
5) "Three"
6) "3"
7) "Four"
8) "4"

To get an element in an ordered collection in reverse order:
Zrevrange KEY START STOP (withscores)
Cases:
Zrevrange My_zset 1 3
Results:
1) "Four"
2) "Three"
3) "Both"
Cases:
Zrevrange My_zset 1-1 Withscores
1) "Four"
2) "4"
3) "Three"
4) "3"
5) "Both"
6) "2"
7) "One"
8) "1"

To delete an element in an ordered collection:
Zrem KEY VALUE
Cases:
Zrem My_zset
View results by Zrange My_zset 0-1:
1) "One"
2) "Three"
3) "Four"
4) "Five"

To find the position of an element in an ordered collection in the positive order:
Zrank KEY VALUE
Cases:
Zrank My_zset Five
Results:
3

To find the position of an element in an ordered collection in reverse order:
Zrevrank KEY VALUE
Cases:
Zrevrank My_zset Five
Results:
0

To view the number of ordered collection elements:
Zcard KEY
Cases:
Zcard My_set

Returns the elements in the collection that are score at a given interval:
Zrangebyscore KEY score_min Score_max (withscores)
Cases:
Zrangebyscore My_zset 1 4
Results:
1) "One"
2) "Three"
3) "Four"
Cases:
Zrangebyscore My_zset 1 4 withscores
Results:
1) "One"
2) "1"
3) "Three"
4) "3"
5) "Four"
6) "4"

Returns the number of elements in the collection that are score at a given interval:
Zcount KEY score_min Score_max
Cases:
Zcount My_zset 1 4

To view the score value of an element:
Zscore KEY VALUE

Cases:
Zscore My_zset Five

Deletes the element in the collection that is ranked in the given interval (forward):
Zremrangebyrank KEY START STOP
Cases:
Zremrangebyrank My_zset 0 2

Deletes the element in the collection that score at a given interval:
Zremrangebyscore KEY score_min Score_max
Cases:
Zremrangebyscore My_zset 4 5

Redis database Operations (3)