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Redis hash hash type string (5)

2022-06-28 11:46:00 【Jiangxiaolong's technology blog】

1.redis Hash type operation

The hash type is mainly used for and mysql Table fields

When the hash type inserts different values of the same field , The new value overwrites the old value

2. Hash type common instructions

command	meaning	grammar
HMSET	Set up a hash key	hmset key Field 1 value1 Field 2 value2
HMGET	see hash key	hmget key Field 1 value1 Field 2 value2
HMGETALL	see key All the values in	hmget key

3. Create a hash key

grammar ：hmset key Field 1 value1 Field 2 value2

       
        127.0.0.1:6379> HMSET user username jiangxl age 99 job it
        
OK
       
       
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4. Look at the hash key A field in

       
        127.0.0.1:6379> HMGET user username
        
1) "jiangxl"
       
       
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5. Look at the hash key All fields in

       
        127.0.0.1:6379> HGETALL user
        
1) "username"
        
2) "jiangxl"
        
3) "age"
        
4) "99"
        
5) "job"
        
6) "it"
       
       
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6. To the existing key Add the field

       
        127.0.0.1:6379> HMSET user qy bj
        
OK
        

        

        
127.0.0.1:6379> HGETALL user
        
1) "username"
        
2) "jiangxl"
        
3) "age"
        
4) "99"
        
5) "job"
        
6) "it"
        
7) "qy"
        
8) "bj"
       
       
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7. Insert Chinese field value

       
        [[email protected] ~]# redis-cli hmset user qy  Beijing 
        
OK
        
[[email protected] ~]# redis-cli --raw hgetall user
        
username
        
jiangxl
        
age
        
27
        
job
        
hr
        
qy
        
 Beijing 
        
usernmae
        
xiaohong
       
       
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