1，set key value ex秒數(shù)/px 毫秒 nx/xx
127.0.0.1:6379> set name z2 px 1000
OK
127.0.0.1:6379> ttl name
(integer) -2
nx:表示key不存在時(shí)執(zhí)行操作
xx：表示key存在時(shí)操作

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如：
127.0.0.1:6379> flushdb
OK
127.0.0.1:6379> set jiaxiao dfss
OK
127.0.0.1:6379> set jiaxiao gjjx nx
(nil)
127.0.0.1:6379> get jiaxiao
"dfss"
127.0.0.1:6379> set jiaxiao hdjx xx
OK
127.0.0.1:6379> get jiaxiao
"hdjx"

2，get key
獲取鍵值

3，獲取多個(gè)key
mget key

4，偏移字符value
127.0.0.1:6379> set suixingpay niubi
OK
127.0.0.1:6379> get suixingpay
"niubi"
127.0.0.1:6379> setrange suixingpay 2 ll
(integer) 5
127.0.0.1:6379> get suixingpay
"nilli"
注意：如果偏移>字符長(zhǎng)度，該字符自動(dòng)補(bǔ)0x00

127.0.0.1:6379> setrange suixingpay 6 c
(integer) 7
127.0.0.1:6379> get suixingpay
"nilli\x00c"

5，附加值
127.0.0.1:6379> append suixingpay @
(integer) 8
127.0.0.1:6379> get suixingpay
"nilli\x00c@"

6，獲取字符串中某個(gè)值的范圍
注意：對(duì)于字符串的下標(biāo)，左數(shù)從0開始，右數(shù)從-1開始
127.0.0.1:6379> set area beijing
OK
127.0.0.1:6379> getrange area 2 5
"ijin"
127.0.0.1:6379> getrange area 0 -5
"bei"

7，增加或者減少
127.0.0.1:6379> set ages 20
OK
127.0.0.1:6379> get ages
"20"
127.0.0.1:6379> incr age
(integer) 1
127.0.0.1:6379> get ages
"20"
127.0.0.1:6379> incr ages
(integer) 21
127.0.0.1:6379> get ages
"21"
127.0.0.1:6379> decr ages
(integer) 20
127.0.0.1:6379> get ages
"20"