Redis Data type operations

7. Data type

Set name ZSJ

Get Name

Setnx name: Does not overwrite the original value if there is no update if there is no option set

Setex: Set and specify the validity period

Setex Haircolor Red: 10 seconds to set the haircolor time

No set validity period is permanently valid

SetRange name 6 gmail.com: Replace with gmail.com "replace equivalent length" starting with sixth character

Mset key1 valus1 key2 value2: Set two values at a time

Msetnx

Getset: Get old value and set new value

Getset Key6 30

GetRange: Get substring

GetRange name 0 5: Returns the No. 0 to 5th string of name

Mget: Bulk Acquisition

INCR key: Self-increment

Incrby Key 6:6 per increment, no key is set to 0 by default

DECR: Self-reduction

Decrby

Append key value: Append value to key to return the final string length

Strlen: Gets the string length of the key "Strlen key"

Hset Key Property value

Hset user:001 name ZSJ

Hget user:001 Name

Hsetnx

Hmset user:001 name Hello age 10

Hmget user:001 name Age

Hincrby user:001 age 5

Hexist user:001 Age: Determine if the age field exists

Hlen user:001: Returns the number of keys in a hash

Hdel user:001 Age: Delete Age in a hash object

Hkeys user:001: Returns all fields in the hash object

Hvals user:001: Returns the value of all fields in the hash object

Hgetall user:001: Gets all the fields and their corresponding values in a hash object

The 8.lists type and operation [Push/pop] "itself is the way to put data in the stack"

Lists in Redis is a doubly linked list and can be used as a stack or as a queue, both from the beginning and the end of the data.

Lpush mylist "Hello" #从头部压入一个元素, returns the number of elements

Lrange mylist 0-1 #从第一个元素一直到尾的第一个元素

Rpush list2 "ZSJ" #从尾部压入元素

Linsert mylist before "Hello" "World": pressing a world element in front of hello "note: direction from tail to head"

LSet mylist 0 "Hello": re-assigning elements to the No. 0 position

Lrem list 1 "Hello": Remove 1 elements of Hello from list, return the number of successful deletions "delete N and value elements from List of key"

LTrim data within the range of the value of the key reserved

LTrim list 1-1: Keep starting from 1 to the last element

Lpop: remove element from head and return delete element

Rpoplpush: Removes the element from the tail of the first list and adds it to the head of the second list

Rpoplpush List1 List2

Lindex: Returns the element of the index position in the list named key

Lindex List 1

Llen returns the size of the list

9.set type

Sadd mysset "Hello"

Smembers MySet #查看元素

Srem myset "Hello" #删除元素

Spop randomly returns and deletes one of the elements in a set named key

Spop MySet

Sdiff Set1 Set2: [Returns the difference between all given key and the first key] returns the Set1 in Set2

Sdiffstore set3 Set1 Set2: Store the difference between Set1 and Set2 in Set3

Sinter Set1 Set2: Takes the intersection of two sets

Sinterstore set3 Set1 Set2: Storing intersections in Set1,set2 in Set3

Sunion Set1 Set2: Collection of Set1,set2

Sunionstore Set3 Set1 Set2

Smove [Remove member from the set corresponding to the first key and add to the second corresponding set]

Smove Set1 Set2 Value

SCard set: Returns the number of elements in the collection

Sismember: Tests whether an element is an element in a set

Sismember Set Value: Tests if value is an element in set

Srandmember: Randomly returns one of the elements in a set, but does not delete

Srandmember Set

Ten sorted sets ordered collection

Zadd adds an element member,score for sorting to a zset named key. If the element exists, its order is updated

Zadd Myzset 1 "one"

Zadd Myzset 2 "

Zadd myzset 3 ": Element" is not updated in this case, but the sort is updated to 3

Zrange myzset 0-1 withscores # #withscores的目的是输出顺序号

Zrem Delete the element in Zset with the name Key member

Zrem Set Value

Zincrby specifies an increase or decrease in the order of the set

Zincrby MySet 2 "one": increase the order value of one by 2 and add this element if one does not exist

Zrank returns the index of the elements in the Zset, sorted from small to large

Zrank MySet "A": Returns the index value of the binary element

Zrevrank sort from big to small

Zrevrange reverse view member and sorting in Zset

Zrevrange Myzset 0-1 Withscores

Zrangebyscore Myzset 2 3 withscores get all elements from 2 to 3

Zcount Myzset 2 4: Counts the number of elements between 2 and 4

Zcard Myzset: Returns the number of all elements in the collection

Zremrangebyrank: Deletes an element of an interval and returns the remaining element "delete based on index"

Zremrangebyrank myzset 1 1 [Remove elements from 1 to 1 starting from the first position]

Zremrangebyscore myzset 1 2 [delete elements of a given interval]

This article is from the "Inverse Day" blog, please be sure to keep this source http://xxzjzsj.blog.51cto.com/3052058/1629163

Redis Data type operations