Redis database Operations--zset ordered collection under LUnix

Create: (The concept of a weight exists in an ordered set)

Zadd Zset 1 a 2 B 3 C 4 D 5 e 6 F 7 G#  output:#  1) "A"#  2) "B" c7>#  3) "C"#  4) "D"#  5) "E"#  6) "F"  #  7) "G"#  left weight, right element

View:

Zrange zset 0-1   #  index value, first and last

Reverse View:

Zrevrange zet 0-1#  output:#  1) "G"#  2) "F"#  3) "E" c8>#  4) "D"#  5) "C"#  6) "B"#  7) "a"

Delete:

Zrem Zset g (Element)

Element value view to view the corresponding index value:

Zrank Zset a    #  0 (index value)

Flashback view element value relative to index value;

Zrevrank Zset a    #  6   (' G ' has been removed before)

Number of Views:

Zcard zset   #  6

View weights:

# 1 (weight)zscore zset F  #  6 (weight)

Returns the elements of an ordered set of score (weights) at a given interval:

Zrangebyscore Zset 3 5 withscores  #  view elements with weights between 3 and 5 (closed interval)#  output:
1) "C"
2) "3"
3) "D"
4) "4"
5) "E"
6) "5"

Returns the number of score (weights) in a given interval in an ordered set:

# the number of elements with weights between 3 and 5 # Output: 3

Delete an indexed value in an ordered set of elements in a given interval:

Zremrangebyrank Zset 3 5  #  Delete an element with an index value from 3 to 5 (closed interval)#  return number 3   means D E F has been removed #< /c10> 's got a B-C left .

Delete the elements of a given interval in an ordered set of weights:

Zremrangebyscore zset 1 3  #  Remove weights from 1 to 3 (closed interval)#  Returns the number 3  means a B c has been deleted # now ordered set Zset is empty

Redis database Operations--zset ordered collection under LUnix