A brief discussion on the 5 data types of redis

This article will introduce you to the five data types of redis. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

1. 5 data types of redis:

string string (can be integer, floating point and string , collectively referred to as elements)

list list (implementation of queue, elements are not unique, first-in-first-out principle)

set set (different elements)

hash hash scatter Column value (hash key must be unique)

sort set ordered set

[Related recommendations: Redis video tutorial]

2. Commonly used commands for string types:

Self-increment: incr

Self-decrement: decr

Add: incrby

Decrease: decrby

3. Common commands supported by list type:

lpush: Push from the left

lpop: Pop from the right

rpush: push from the right

rpop: pop from the right

llen: check the length of a certain list data type

4. Common commands supported by the set type:

sadd: add data

scard: check the number of elements present in the set data

sismember: Determine whether an element exists in the set data

srem: Delete an element in a set data

5. Commonly used hash data types supported Command:

hset: Add hash data

hget: Get hash data

hmget: Get multiple hash data

6. Sort set is very similar to hash, and is also a mapping form of storage:

zadd: add

zcard: query

zrange: data Sorting

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