[大数据]5、Redis-String(类型操作)

设置字符串

127.0.0.1:6379>  set xm  gaobin
OK

获取字符串

127.0.0.1:6379> get xm
"gaobin"

追加一个值到字符串

127.0.0.1:6379> APPEND xm  dashen  //追加一个值
(integer) 12
127.0.0.1:6379> get xm  //查看值
"gaobindashen"

获取字符串长度

127.0.0.1:6379> STRLEN xm
(integer) 12

自增跟自减

127.0.0.1:6379> incr age  自增1
(integer) 1
127.0.0.1:6379> get age
"1"
127.0.0.1:6379> decr age  自减1
(integer) 0
127.0.0.1:6379> get age
"0"
127.0.0.1:6379> INCRBY age  10 自增10 
(integer) 0
127.0.0.1:6379> get age
"10"
127.0.0.1:6379> DECRBY age 10 自减10
(integer) 0
127.0.0.1:6379> get age
"10"

字符串范围 range

127.0.0.1:6379> set key "helwerwerewr"
OK
1

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