1. String数据类型
字符串是使用最多的一种数据类型，C语言当中，0代表false，1代表true
SET key value [EX seconds|PX milliseconds] [NX|XX] [KEEPTTL] # 设置值
GET key # 获取值
SETEX key seconds value # 设置失效时间
MSET key value [key value ...] # 进行多个内容设置
SETNX key value # 不覆盖单个内容设置
MSETNX key value [key value ...] # 不覆盖设置多个内容
APPEND key value # 追加
STRLEN key # 获取长度
DEL key [key ...] # 删除key
flushdb [ASYNC] # 清空当前库
FLUSHALL [ASYNC] # 清空所有库
SELECT index # 切换库
root@iZ2ze8gkwfpqlsfl8j4o14Z:~# redis-cli -p 6379
127.0.0.1:6379> AUTH 123456
OK
127.0.0.1:6379> set msg lee-hello
OK
127.0.0.1:6379> get msg
"lee-hello"
127.0.0.1:6379> set info {name:SMITH,age:18}
OK
127.0.0.1:6379> set code 654321 EX 10
OK
127.0.0.1:6379> mset info-a lee info-b hello info-c world
OK
127.0.0.1:6379> setnx info hello
(integer) 0
127.0.0.1:6379> setnx infox hello
(integer) 1
127.0.0.1:6379> msetnx info-a lee info-b hello info-d xiaoxiao
(integer) 0
127.0.0.1:6379> append msg !!!
(integer) 12
127.0.0.1:6379> strlen msg
(integer) 12
127.0.0.1:6379> del msg info
(integer) 2
127.0.0.1:6379> flushdb
OK
127.0.0.1:6379> flushall
OK
127.0.0.1:6379> select 1
OK
2. Hash数据类型
Hash是对String类型的扩展，可以理解为key-map，可以创建多个子key来保存一组数据。
HSET key field value [field value ...] # 设置hash值
HGET key field # 获取hash
HMSET key field value [field value ...] # 多个hash设置
HMGET key field [field ...] # 获取多个子key的值
HSETNX key field value # 不覆盖进行设置
HDEL key field [field ...] # 删除
HVALS key # 获取hash key中的所有数据
HGETALL key # 获取hash中的所有内容，包括key和value
INCR key # 数字操作，自增1
INCRBY key increment # 数字操作，自增指定长度
DECR key # 数字操作，自减1
DECRBY key decrement # 自减指定长度
HINCRBY key field increment # 对hash 类型进行自增
root@iZ2ze8gkwfpqlsfl8j4o14Z:~# redis-cli
127.0.0.1:6379> AUTH 123456
OK
127.0.0.1:6379> hset member-lee name xiaoli
(integer) 1
127.0.0.1:6379> hset member-lee age 18
(integer) 1
127.0.0.1:6379> hset member-lee salary 1.3
(integer) 1
127.0.0.1:6379> hmset member-xiaoke name xb age 69 salary -103.2
OK
127.0.0.1:6379> hmget member-lee name age salary
1) "xiaoli"
2) "18"
3) "1.3"
127.0.0.1:6379> hsetnx member-lee name xiaoli
(integer) 0
127.0.0.1:6379> hdel member-lee age salary
(integer) 2
127.0.0.1:6379> hvals member-xiaoke
1) "xb"
2) "69"
3) "-103.2"
127.0.0.1:6379> hgetall member-xiaoke
1) "name"
2) "xb"
3) "age"
4) "69"
5) "salary"
6) "-103.2"
127.0.0.1:6379> set xiaohei-age 69
OK
127.0.0.1:6379> incr xiaohei-age
(integer) 70
127.0.0.1:6379> incrby xiaohei-age 78
(integer) 148
127.0.0.1:6379> decr xiaohei-age
(integer) 147
127.0.0.1:6379> decrby xiaohei-age 200
(integer) -53
127.0.0.1:6379> hset shopcar-lee 99 1
(integer) 1
127.0.0.1:6379> hincrby shopcar-lee 99 1
(integer) 2
3. List数据类型
List数据类型主要实现的是一个双端队列的处理概念（可以实现队列的入队和出队操作），也可实现队头和队尾的数据操作。
LPUSH key element [element ...] # 向队列左边进行数据添加
RPUSH key element [element ...] # 向队列右边进行数据添加
LRANGE key start stop # 获取队列内容，全部获取0 -1
LPOP key # 左边弹出
RPOP key # 右边弹出
LINSERT key BEFORE|AFTER pivot element # 在指定位置之前|之后进行添加
LSET key index element # 根据索引进行内容修改
LREM key count element # 进行指定个数的删除，有可能存在重复数据
LTRIM key start stop # 删除当前位置之外的数据
RPOPLPUSH source destination # 将弹出的内容保存到另外一个集合
LLEN key # 获取队列长度
127.0.0.1:6379> lpush lee-message hello-a hello-b hello-c hello-d hello-e
(integer) 5
127.0.0.1:6379> rpush lee-message world-1 world-2 world-3 world-4 world-5
(integer) 10
127.0.0.1:6379> lrange lee-message 0 -1
1) "hello-e"
2) "hello-d"
3) "hello-c"
4) "hello-b"
5) "hello-a"
6) "world-1"
7) "world-2"
8) "world-3"
9) "world-4"
10) "world-5"
127.0.0.1:6379> lpop lee-message
"hello-e"
127.0.0.1:6379> rpop lee-message
"world-5"
127.0.0.1:6379> linsert lee-message BEFORE hello-c hello-before
(integer) 9
127.0.0.1:6379> lrange lee-message 0 -1
1) "hello-d"
2) "hello-before"
3) "hello-c"
4) "hello-b"
5) "hello-a"
6) "world-1"
7) "world-2"
8) "world-3"
9) "world-4"
127.0.0.1:6379> linsert lee-message AFTER hello-c hello-after
(integer) 10
127.0.0.1:6379> lset lee-message 3 hello-world
OK
127.0.0.1:6379> lpush lee-message hello-repeat hello-repeat hello-repeat
(integer) 13
127.0.0.1:6379> lrem lee-message 1 hello-e
(integer) 0
127.0.0.1:6379> lrem lee-message 2 hello-repeat
(integer) 2
127.0.0.1:6379> ltrim lee-message 2 4
OK
127.0.0.1:6379> rpoplpush lee-message lee-pop
"hello-world"
127.0.0.1:6379> llen lee-pop
(integer) 1
4. Set数据类型
Set集合最大的特点是可以保存无重复的元素集合，每个集合里面最多可保存40亿元素的信息，set集合出现的最大意义在于可以方便的进行各种集合运算。
SADD key member [member ...] # 设置set值
SMEMBERS key # 查看内容
SPOP key [count] # 弹出数据，可以指定个数
SRANDMEMBER key [count] # 弹出数据内容，不进行元素删除
SDIFF key [key ...] # 计算多个集合的差值
SINTER key [key ...] # 计算多个集合交集
SUNION key [key ...] # 计算多个集合并集
SDIFFSTORE destination key [key ...] # 进行差集信息的存储
SINTERSTORE destination key [key ...] # 实现交集信息存储
SUNIONSTORE destination key [key ...] # 实现并集信息存储
SMOVE source destination member # 由一个set向另一个set进行元素移动
SISMEMBER key member # 判断是否存在某个元素
127.0.0.1:6379> sadd user-lee a b c d e f g h i h k
(integer) 1
127.0.0.1:6379> sadd user-hei a b c d x y z a a d c
(integer) 0
127.0.0.1:6379> smembers user-lee
1) "i"
2) "h"
3) "e"
4) "f"
5) "a"
6) "g"
7) "d"
8) "k"
9) "c"
10) "b"
127.0.0.1:6379> spop user-lee
"c"
127.0.0.1:6379> srandmember user-lee
"a"
127.0.0.1:6379> sdiff user-lee user-hei
1) "f"
2) "e"
3) "h"
4) "i"
5) "k"
6) "g"
127.0.0.1:6379> sinter user-lee user-hei
1) "d"
2) "a"
3) "b"
127.0.0.1:6379> sunion user-lee user-hei
1) "y"
2) "i"
3) "f"
4) "e"
5) "h"
6) "z"
7) "a"
8) "x"
9) "g"
10) "d"
11) "k"
12) "c"
13) "b"
127.0.0.1:6379> sdiffstore user-diff user-lee user-hei
(integer) 6
127.0.0.1:6379> sinterstore user-inter user-lee user-hei
(integer) 3
127.0.0.1:6379> sunionstore user-union user-lee user-hei
(integer) 13
127.0.0.1:6379> smove user-lee user-hei k
(integer) 1
127.0.0.1:6379> sismember user-lee a
(integer) 1
5. ZSet数据类型
ZSet也属于Set集合，是对set集合的扩充，区别在于：第一可以进行顺序排序，第二可以进行数据打分。例如在很多搜索引擎中会出现一些热点的搜索关键字，就可以通过ZSet数据类型来实现。
ZADD key [NX|XX] [CH] [INCR] score member [score member ...] # 内容设置
ZRANGE key start stop [WITHSCORES] # 显示内容
ZREVRANGE key start stop [WITHSCORES] # 进行排序
127.0.0.1:6379> zadd keyword-20201010 5.0 preety
(integer) 1
127.0.0.1:6379> zadd keyword-20201010 2.0 spring
(integer) 1
127.0.0.1:6379> zadd keyword-20201010 10.0 xiaoli
(integer) 1
127.0.0.1:6379> zadd keyword-20201010 3.5 stream
(integer) 1
127.0.0.1:6379> zrange keyword-20201010 0 -1
1) "spring"
2) "stream"
3) "preety"
4) "xiaoli"
127.0.0.1:6379> zrange keyword-20201010 0 -1 WITHSCORES
1) "spring"
2) "2"
3) "stream"
4) "3.5"
5) "preety"
6) "5"
7) "xiaoli"
8) "10"
127.0.0.1:6379> zrevrange keyword-20201010 0 -1
1) "xiaoli"
2) "preety"
3) "stream"
4) "spring"
127.0.0.1:6379> zrevrange keyword-20201010 1 5
1) "preety"
2) "stream"
3) "spring"