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First, put the mouse on “ This computer ” On , Right click the attribute , Find the advanced system Settings , The following operations are shown in the figure .

After clicking New, you can paste the directory you extracted into , For example, I unzip it to E:\Redis , Then keep making sure .
notes ：Win10 You can also enter directly into the search box in the lower left corner env Call out the environment variables page .
then , Click the lower left corner to search there and enter “cmd” Call command prompt terminal , There is no search box where to open cmd Will do , Input redis-cli, If the following content appears, the configuration is successful .

Redis Common operations

The article only gives examples of some commonly used operations , More operation reference redis Command manuals ：Redis Command Reference — Redis Command Reference

Redis The five data types of are ：Srting（ character string ）、Hash（ Hash ）、List（ list ）、Set（ aggregate ） and zset（ Ordered set ）. Install well Redis after , The default is 16 A database , For the first time, it is used by default 0 Signal library .

Common operations

Switch database ：select Numbers ; such as select 1, The delegate switches to 1 The database .
Check how many pairs there are in the current library key-val：dbsize;
Delete library ：①flushdb Delete all data in the current library ②flushall Delete 16 All data in a library .

String Basic operation of string

Set add to

The format is ：SET key value
Be careful ： ①set It can be uppercase or lowercase
②key Representative Key , Self defined
③value Representative value

notes ：“” Double quotation marks can be omitted , If value What you input is Chinese , So it doesn't show .get Will show you the transcoded Chinese . But when the program is coded, you can turn it into a string and it can be displayed normally .

Get obtain

Format ：get key.

del Delete

Format ：del key

setex Delete regularly

Format ：setex key Number of seconds value

I'll put name Set to 10 Automatically delete... In seconds ,10 Seconds get You can read hello,10 It cannot be read after seconds .

mset and mget Batch write and read

Format ：mset key1 value key2 value
mget key1 key2

Hash Basic operation of hash

Redis hash Is a set of key value pairs .
Redis hash It's a string Type of field and value Mapping table ,hash Ideal for storing objects .

give an example ： Store one user Information
user name "smith" age 30 job "coder"
explain ：
key:user
name "smith" age 30 job "coder" Three pairs field-value

hset and hget

hset and hget You can only add or read one by one .

As long as you read it, it is a string string type , For example, look at that age Read is “30”.
hgetall user You can read all the fields you added .

hmset and hmget

hmset and hmget Can help you add at one time / Read multiple fields .

hlen

Count one hash There are several elements .

List List basic operations

List is a simple list of strings , Sort by insertion order . You can add an element to the head of the list （ On the left ） Or the tail （ On the right ）.
List The essence is a chain list ,List Of Elements are ordered , Elemental Values can be repeated .

lpush/rpush and lrange Insert and get

lpush Means to insert from the left ,rpush Means to insert from the right ,lrange Indicates reading from left to right .
lrange Format ：lrange key start stop
Examples are as follows ：

lrange hinder 0 Indicates that starting from the first element ,-1 That's the last element , Of course -2 It means the penultimate element .

lpop and rpop Delete

lpop： Make the current list the most Left Element deletion of edge .
rpop： Make the current list the most Right Element deletion of edge .

del

Delete a list

llen Find the length

Format ：llen key
return key The length of , If key non-existent , Then return to 0

lindex

Returns a list of key in , Subscript to be index The elements of . from 0 Start .

Because it is inserted from left to inside ,a In the innermost , At this time, the order of the list is c,b,a, So the index is 2 Yes. a.

Set Set basic operations

set yes string Unordered collection of type .
The bottom is Hash Table data structure ,Set It's also Store many string elements , String elements are unordered , and The value of an element cannot be repeated .