1, set hello 'hello'
set num 1
inrc num //自增,原子操作
get num
get hello
del num hello //返回刪除成功的個數2
2, 生命期的變量
set para 1
ttl para // -1 never expire
expire para 100
//10s後
ttl para / / 90
//100s後
ttl para // -2 does not exist
3, 數據結構 list 有序
方法:rpush lpush llen lpop rpop lrange
4, 數據結構 set 無序
sadd ---- sadd superpower 'fill'
srem ----- srem superpower 'fill' 移除
sismembers ---
smembers -- 返回所有的member
sunion --- 合併兩個或更多的set
如: sadd set1 'hello'
sadd set2 'world'
sunion set1 set2
5, 數據結構 有序的sets
zadd z1 1 'hello'
zadd z1 2 'world' //第三個用於排序 (1, 2)
zrange z1 0 -1
6, 數據結構 hashes
hset student name 'xia'
hset student age 12
//獲取多個域
hgetall student
//獲取一個域
hget student name
//多個域同時設置
hmset student name 'xia' age 12
//增加
hincrby student age 1 -> 11
//刪除
hdel student age
hincrby student age 1 -> 1