redis--string

1. set

127.0.0.1:6379[1]> set name xinxin
OK
127.0.0.1:6379[1]> get name
"xinxin"

1. setnx

127.0.0.1:6379[1]> setnx name xinxin_new
(integer) 0
127.0.0.1:6379[1]> setnx age 18
(integer) 1
127.0.0.1:6379[1]> get name
"xinxin"
127.0.0.1:6379[1]> get age
"18"

1. setex

127.0.0.1:6379[1]> setex sex 5 female
OK
127.0.0.1:6379[1]> get sex
(nil)
127.0.0.1:6379[1]> setex sex 8 female
OK
127.0.0.1:6379[1]> get sex
"female"
127.0.0.1:6379[1]> get sex
(nil)

1. setrange

127.0.0.1:6379[1]> get name
"xinxin"
127.0.0.1:6379[1]> setrange name 3 _new
(integer) 7
127.0.0.1:6379[1]> get name
"xin_new"

1. mset

127.0.0.1:6379[1]> mset class 7 grade 3
OK
127.0.0.1:6379[1]> get class
"7"
127.0.0.1:6379[1]> get grade
"3"

1. msetnx

127.0.0.1:6379[1]> msetnx teacher Wang class 6
(integer) 0
127.0.0.1:6379[1]> get teacher
(nil)     //原子操作

1. get

127.0.0.1:6379[1]> get name
"xinxin"

1. getset

127.0.0.1:6379[1]> getset name xin_new
"xinxin"
127.0.0.1:6379[1]> get name 
"xin_new"

1. getrange

127.0.0.1:6379[1]> get name 
"xin_new"
127.0.0.1:6379[1]> getrange name 4 -1
"new"

1. mget

127.0.0.1:6379[1]> mget name sex age
1) "xin_new"
2) (nil)
3) "18"

1. incr

127.0.0.1:6379[1]> incr age
(integer) 19
127.0.0.1:6379[1]> get age
"19"

1. incrby

127.0.0.1:6379[1]> incrby age 3
(integer) 22
127.0.0.1:6379[1]> get age
"22"

1. decr

127.0.0.1:6379[1]> decr age
(integer) 21
127.0.0.1:6379[1]> get age
"21"

1. decrby

127.0.0.1:6379[1]> decrby age 3
(integer) 18
127.0.0.1:6379[1]> get age
"18"

127.0.0.1:6379[1]> incrby age -2
(integer) 16
127.0.0.1:6379[1]> get age
"16"

1. append

127.0.0.1:6379[1]> get name
"xin_new"
127.0.0.1:6379[1]> append name @163.com
(integer) 15
127.0.0.1:6379[1]> get name
"[email protected]"

1. strlen

127.0.0.1:6379[1]> get name
"[email protected]"
127.0.0.1:6379[1]> strlen name
(integer) 15