How to query data in redis

redis data query:

To query the data in redis, you need to connect to redis first

1. Connect to the service

[root@redis1-20 ~]# telnet 127.0.0.1 6380
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
#用telnet也能登录，但是无法查看key的value

[root@redis1-20 src]# ./redis-cli -p 6380
#redis可能有好几个服务，要指定端口连接。

2. Redis has five data types: string, list, hash, set, zset. Different data types have different ways of viewing values.

3. View command

string: get key: Get the value of the specified key

list: lrange key start end: Get the value from start to end in the linked list, start starts from 0, like STATION1 below, the position of D is 0, the position of C is 1, start and end can also be negative numbers, the position of the first to last element is -1, and the position of the second to last element is -2, so analogy.

hash: hget hash-name key
set:smembers key
zset: zrange zset-name 0 -1
4. You can view the existing keys in Redis through keys *

Redis usage tutorial column!

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