set type
Add element to unordered set:
sadd KEY VALUE1 VALUE2 VALUE3 Example: ( sadd my_set1 abcddcsa )
Get the elements of an unordered set:
smembers KEY Example: ( smembers my_set1 )
Result:
1) "c"
2) "s"
3) "a"
4) "d"
5) "b"
Delete a specified element in an unordered set:
srem KEY VALUE Example: ( srem my_set1 a )
Query results through smembers my_set1:
1) "c"
2) "s"
3) "d"
4) "b"
Delete random elements in an unordered set:
spop KEY VALUE Example: ( spop my_set1 )
Query results by smembers my_set1:
1) "c"
2) "s"
3) "b"
Move an element of one set to another:
smove SRC_KEY DST_KEY VALUE Example: ( smove my_set1 my_set2 s )
query result by smembers my_set1:
1) "c"
2) "b"
query result by smembers my_set2:
1) "s"
Determine whether there is an element in the set:
sismember KEY VALUE Example: ( sismember my_set1 b )
交集：
sinter KEY1 KEY2
例：
sadd my_set1 a b c d e
sadd my_set2 c d e f g
sinter my_set1 my_set2
结果：
1) "c"
2) "d"
3) "e"
Merge the intersection of KEY1 and KEY2 into KEY3:
sinterstore KEY3 KEY1 KEY2
Example:
sinterstore my_set3 my_set1
my_set2 Query results through smembers my_set3:
1) "d"
2) "c"
3) "e"
并集：
sunion KEY1 KEY2
例：
sunion my_set1 my_set2
结果：
1) "g"
2) "c"
3) "s"
4) "d"
5) "a"
6) "f"
7) "e"
8) "b"
Merge the union of KEY1 KEY2 into KEY3:
sunionstore KEY3 KEY1 KEY2
Example:
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 elements that are not in set 2 but only in set 1)
sdiff KEY1 KEY2
Example:
sdiff my_set1 my_set2
Result:
1) "a"
2) "b"
Merge the difference of KEY1 and KEY2 into KEY3:
sdiffstore KEY3 KEY1 KEY2
Example:
sdiffstore my_set3 my_set2
my_set1 Query result by smembers my_set3:
1) "g"
2) "f"
3) "s"
Get the number of elements in the set:
scard KEY
Example:
scard my_set1
Randomly returns an element in the set:
srandmember KEY
Example:
srandmember my_set1
zset type
Add an element to a sorted set:
zadd KEY SCORE VALUE
Example:
zadd my_zset 1 'one'
zadd my_zset 2 'two'
zadd my_zset 3 'three'
zadd my_zset 4 'four'
zadd my_zset 5 'five'
正序获取有序集合中的元素：
zrange KEY START STOP (withscores)
例：
zrange my_zset 0 -1
结果：
1) "one"
2) "two"
3) "three"
4) "four"
5) "five"
例：
zrange my_zset 0 3 withscores
结果：
1) "one"
2) "1"
3) "two"
4) "2"
5) "three"
6) "3"
7) "four"
8) "4"
Get the elements in a sorted set in reverse order:
zrevrange KEY START STOP (withscores)
Example:
zrevrange my_zset 1 3Results
:
1) "four"
2) "three"
3) "two"
Example:
zrevrange my_zset 1 -1 withscores
1) " four"
2) "4"
3) "three"
4) "3"
5) "two"
6) "2"
7) "one"
8) "1"
Delete an element in a sorted set:
zrem KEY VALUE
Example:
zrem my_zset two
Look at the result by zrange my_zset 0 -1:
1) "one"
2) "three"
3) "four"
4) "five"
Find the position of an element in a sorted set in positive order:
zrank KEY VALUE
Example:
zrank my_zset five
Result:
3
Find the position of an element in a sorted set in reverse order:
zrevrank KEY VALUE
Example:
zrevrank my_zset five
Result:
0
View the number of sorted set elements:
zcard KEY
Example:
zcard my_set
Returns the elements in the set whose SCORE is in the given interval:
zrangebyscore KEY SCORE_MIN SCORE_MAX (withscores)
Example:
zrangebyscore my_zset 1 4
Result:
1) "one"
2) "three"
3) "four"
Example:
zrangebyscore my_zset 1 4 withscores
Result:
1) "one"
2) "1"
3) "three"
4) "3"
5) "four"
6) "4"
Returns the number of elements in the set with SCORE in the given interval:
zcount KEY SCORE_MIN SCORE_MAX
Example:
zcount my_zset 1 4
View the SCORE value of an element:
zscore KEY VALUE
例：
zscore my_zset five
Remove elements in a set that are ranked in a given interval (forward):
zremrangebyrank KEY START STOP
Example:
zremrangebyrank my_zset 0 2
Delete elements in the set whose score is in the given interval:
zremrangebyscore KEY SCORE_MIN SCORE_MAX
Example:
zremrangebyscore my_zset 4 5