redis基础数据格式 - hash

添加, 读取

127.0.0.1:6379> hset languages php "learn php"
(integer) 0
127.0.0.1:6379> hset languages java "learn java"
(integer) 1
127.0.0.1:6379> hset languages go "learn go"
(integer) 0

//也可以是使用hmset 一次设置多个值
127.0.0.1:6379> hmset languages php "learn php" java "learn java" go "learn go"
OK

127.0.0.1:6379> hgetall languages
1) "php"
2) "learn php"
3) "go"
4) "learn go"
5) "python"
6) "learn python"
7) "java"
8) "learn java"

127.0.0.1:6379> hget languages php
"learn php"

127.0.0.1:6379> hlen languages
(integer) 4

删除

//Redis Hdel 命令用于删除哈希表 key 中的一个或多个指定字段，不存在的字段将被忽略。
127.0.0.1:6379> hdel languages go
(integer) 1
127.0.0.1:6379> hgetall languages
1) "php"
2) "learn php"
3) "python"
4) "learn python"
5) "java"
6) "learn java"

//删除整个hash table 
127.0.0.1:6379> del languages
(integer) 1
127.0.0.1:6379> hgetall languages
(empty array)

自增

// hincrby 整数增量计算
127.0.0.1:6379> hset a a1 10
(integer) 1
127.0.0.1:6379> hincrby a a1 2
(integer) 12
127.0.0.1:6379> hincrby a a1 -2
(integer) 10
127.0.0.1:6379>

//float 增量计算
127.0.0.1:6379> hset a a1 10
(integer) 0
127.0.0.1:6379> hincrbyfloat a a1 0.25
"10.25"
127.0.0.1:6379> hincrbyfloat a a1 -7.25
"3"

更多命令参考官方文档：https://www.redis.net.cn/order/3569.html