article-no.07 Redis Getting Started Guide

1. Get the list of key names that match the rule:Keys wildcard

？ : matches any one character

*: Matches any one (>=0) character

[]: Match any of the characters between parentheses, you can use "-" to denote a range

\x: Match escape character

2.exists key: Determine if a key exists

3, del key [Key1 Key2]: Delete key, return the number of deletions, >=1: Delete succeeded, 0: Delete failed or does not exist

4. Type key: The data type of the return key value

5, incr new_num: self-increase +1

Incrby New_num 10: self-increment +10

DECR new_num: Auto minus-1

Decrby new_num 10: Auto minus-10

Incrbyfloat New_num 2.7 Self-increment +2.7 floating point

Every time the latest value is returned, all Redis commands are atomic operations

6. Key naming rule: Object type: Object ID: Object property (user:1001:friends.list User ID 1001 buddy list)

7. Append key "Hello": Append value to tail, return total length

8. Strlen Key: Gets the total length of the string

9. Get or set multiple key values at the same time

127.0.0.1:6379[5]> mset AAA 111 BBB 222ok127.0.0.1:6379[5]> mget AAA bbb1) "111" 2) "222"

article-no.07 Redis Getting Started Guide