Article-No.07 Redis入门指南

1、获取符合规则的键名列表：keys 通配符

？：匹配任意一个字符

*：匹配任意个（>=0）字符

[]：匹配括号之间的任一字符，可以使用“-”表示范围

\x：匹配转义字符

2、exists key：判断一个键是否存在

3、del key [key1 key2]：删除键，返回删除的个数，>=1：删除成功，0：删除失败或者不存在

4、type key：返回键值的数据类型

5、incr new_num：自增+1

incrby new_num 10 : 自增+10

decr new_num：自减-1

decrby new_num 10：自减-10

incrbyfloat new_num 2.7 自增+2.7 浮点数

每次返回最新值，所有redis命令都是原子操作

6、key命名规则：对象类型:对象id:对象属性（user:1001:friends.list 用户id为1001的好友列表）

7、append key "hello" ：向尾部追加值，返回总长度

8、strlen key：获取字符串总长度

9、同时获取或设置多个键值

127.0.0.1:6379[5]> mset aaa 111 bbb 222
OK
127.0.0.1:6379[5]> mget aaa bbb
1) "111"
2) "222"

10、散列类型

127.0.0.1:6379[5]> hset usermap name lucy
(integer) 0
127.0.0.1:6379[5]> hmset usermap age 18 classes 3 address beijing
OK
127.0.0.1:6379[5]> hget usermap name
"lucy"
127.0.0.1:6379[5]> hmget usermap name age address
1) "lucy"
2) "18"
3) "beijing"
127.0.0.1:6379[5]> hgetall usermap
1) "name"
2) "lucy"
3) "age"
4) "18"
5) "classes"
6) "3"
7) "address"
8) "beijing"
127.0.0.1:6379[5]> hexists usermap name
(integer) 1
127.0.0.1:6379[5]> hsetnx usermap name lili
(integer) 0
127.0.0.1:6379[5]> hget usermap name
"lucy"
127.0.0.1:6379[5]> hsetnx usermap love basketboll
(integer) 1
127.0.0.1:6379[5]> hget usermap love
"basketboll"
127.0.0.1:6379[5]> hincrby usermap age 5
(integer) 23
127.0.0.1:6379[5]> hget usermap age
"23"
127.0.0.1:6379[5]> hincrby usermap age 7
(integer) 30
127.0.0.1:6379[5]> hget usermap age
"30"
127.0.0.1:6379[5]> hdel usermap love address
(integer) 2
127.0.0.1:6379[5]> hgetall usermap
1) "name"
2) "lucy"
3) "age"
4) "30"
5) "classes"
6) "3"
127.0.0.1:6379[5]>

11、列表类型

127.0.0.1:6379[5]> lpush userid_list 1 2 3 4
(integer) 4
127.0.0.1:6379[5]> rpush userid_list 5 6 7 8
(integer) 8
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "4"
2) "3"
3) "2"
4) "1"
5) "5"
6) "6"
7) "7"
8) "8"
127.0.0.1:6379[5]> lpop userid_list
"4"
127.0.0.1:6379[5]> rpop userid_list
"8"
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "3"
2) "2"
3) "1"
4) "5"
5) "6"
6) "7"
127.0.0.1:6379[5]> llen userid_list
(integer) 6
127.0.0.1:6379[5]> lrange userid_list 0 2
1) "3"
2) "2"
3) "1"
127.0.0.1:6379[5]> lrange userid_list 1 -1
1) "2"
2) "1"
3) "5"
4) "6"
5) "7"
127.0.0.1:6379[5]> lrange userid_list 0 999
1) "3"
2) "2"
3) "1"
4) "5"
5) "6"
6) "7"
127.0.0.1:6379[5]> lrem userid_list 1 1
(integer) 1
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "3"
2) "2"
3) "5"
4) "6"
5) "7"
127.0.0.1:6379[5]> lpush userid_list 2 2 3 4 4 6 6 6 8 8
(integer) 15
127.0.0.1:6379[5]> lrange userid_list 0 -1
 1) "8"
 2) "8"
 3) "6"
 4) "6"
 5) "6"
 6) "4"
 7) "4"
 8) "3"
 9) "2"
10) "2"
11) "3"
12) "2"
13) "5"
14) "6"
15) "7"
127.0.0.1:6379[5]> lrem userid_list 2 6
(integer) 2
127.0.0.1:6379[5]> lrange userid_list 0 -1
 1) "8"
 2) "8"
 3) "6"
 4) "4"
 5) "4"
 6) "3"
 7) "2"
 8) "2"
 9) "3"
10) "2"
11) "5"
12) "6"
13) "7"
127.0.0.1:6379[5]> lrem userid_list -2 2
(integer) 2
127.0.0.1:6379[5]> lrange userid_list 0 -1
 1) "8"
 2) "8"
 3) "6"
 4) "4"
 5) "4"
 6) "3"
 7) "2"
 8) "3"
 9) "5"
10) "6"
11) "7"
127.0.0.1:6379[5]> lrem userid_list 0 3
(integer) 2
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "8"
2) "8"
3) "6"
4) "4"
5) "4"
6) "2"
7) "5"
8) "6"
9) "7"
127.0.0.1:6379[5]> lindex userid_list 3
"4"
127.0.0.1:6379[5]> lset userid_list 1 99
OK
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "8"
2) "99"
3) "6"
4) "4"
5) "4"
6) "2"
7) "5"
8) "6"
9) "7"
127.0.0.1:6379[5]> ltrim userid_list 2 8
OK
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "6"
2) "4"
3) "4"
4) "2"
5) "5"
6) "6"
7) "7"
127.0.0.1:6379[5]> linsert userid_list before 2 10
(integer) 8
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "6"
2) "4"
3) "4"
4) "10"
5) "2"
6) "5"
7) "6"
8) "7"
127.0.0.1:6379[5]> linsert userid_list after 5 999
(integer) 9
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "6"
2) "4"
3) "4"
4) "10"
5) "2"
6) "5"
7) "999"
8) "6"
9) "7"
127.0.0.1:6379[5]> rpoplpush userid_list new_userid_list
"7"
127.0.0.1:6379[5]> rpoplpush userid_list new_userid_list
"6"
127.0.0.1:6379[5]> lrange userid_list 0 -1
1) "6"
2) "4"
3) "4"
4) "10"
5) "2"
6) "5"
7) "999"
127.0.0.1:6379[5]> lrange new_userid_list 0 -1
1) "6"
2) "7"

11、集合类型

127.0.0.1:6379[5]> sadd tagset 1 5 
(integer) 2
127.0.0.1:6379[5]> sadd tagset 1 8 9
(integer) 2
127.0.0.1:6379[5]> smembers tagset
1) "1"
2) "5"
3) "8"
4) "9"
127.0.0.1:6379[5]> srem tagset 1 8
(integer) 2
127.0.0.1:6379[5]> smembers tagset
1) "5"
2) "9"
127.0.0.1:6379[5]> sismembers tagset 5
(error) ERR unknown command 'sismembers'
127.0.0.1:6379[5]> sismember tagset 5
(integer) 1
127.0.0.1:6379[5]> sismember tagset 10
(integer) 0
127.0.0.1:6379[5]> sadd setA 5 10 15
(integer) 3
127.0.0.1:6379[5]> sadd setB 5 7 8
(integer) 3
127.0.0.1:6379[5]> sadd setC 10 19 28
(integer) 3
127.0.0.1:6379[5]> sdiff setA setB setC
1) "15"
127.0.0.1:6379[5]> sinter setA setB setC
(empty list or set)
127.0.0.1:6379[5]> sadd setC 5
(integer) 1
127.0.0.1:6379[5]> sinter setA setB setC
1) "5"
127.0.0.1:6379[5]> sunion setA setB setC
1) "5"
2) "7"
3) "8"
4) "10"
5) "15"
6) "19"
7) "28"
127.0.0.1:6379[5]> 
127.0.0.1:6379[5]> 
127.0.0.1:6379[5]> 
127.0.0.1:6379[5]> sadd post:1:tags java
(integer) 1
127.0.0.1:6379[5]> sadd post:2:tags mysql java
(integer) 2
127.0.0.1:6379[5]> sadd post:3:tags java mysql redis
(integer) 3
127.0.0.1:6379[5]> sadd tag:redis:posts 3
(integer) 1
127.0.0.1:6379[5]> sadd tag:mysql:posts 2 3
(integer) 2
127.0.0.1:6379[5]> sadd tag:java:posts 1 2 3
(integer) 3
127.0.0.1:6379[5]> smembers tag:redis:posts
1) "3"
127.0.0.1:6379[5]> smembers tag:java:posts
1) "1"
2) "2"
3) "3"
127.0.0.1:6379[5]> sinter tag:java:posts tag:mysql:posts
1) "2"
2) "3"
127.0.0.1:6379[5]> sinter tag:java:posts tag:mysql:posts tag:redis:posts
1) "3"

12、有序集合类型

127.0.0.1:6379[5]> zadd score 89 Tom 76 Lucy 66 zhangsan 98 shma
(integer) 4
127.0.0.1:6379[5]> zadd score 75.5 sunwei
(integer) 1
127.0.0.1:6379[5]> zscore score shma
"98"
127.0.0.1:6379[5]> zrange score 0 999 widthscores
(error) ERR syntax error
127.0.0.1:6379[5]> zrange score 0 -1 widthscores
(error) ERR syntax error
127.0.0.1:6379[5]> zrange score 0 -1 
1) "zhangsan"
2) "sunwei"
3) "Lucy"
4) "Tom"
5) "shma"
127.0.0.1:6379[5]> zrevrange score 0 -1 withscores
 1) "shma"
 2) "98"
 3) "Tom"
 4) "89"
 5) "Lucy"
 6) "76"
 7) "sunwei"
 8) "75.5"
 9) "zhangsan"
10) "66"
127.0.0.1:6379[5]> zrange score 0 -1 withscores
 1) "zhangsan"
 2) "66"
 3) "sunwei"
 4) "75.5"
 5) "Lucy"
 6) "76"
 7) "Tom"
 8) "89"
 9) "shma"
10) "98"
127.0.0.1:6379[5]> zrange score 10 100
(empty list or set)
127.0.0.1:6379[5]> zrangebyscore score 10 80
1) "zhangsan"
2) "sunwei"
3) "Lucy"
127.0.0.1:6379[5]> zrangebyscore score 10 80 widthscores
(error) ERR syntax error
127.0.0.1:6379[5]> zrangebyscore score 10 80 withscores
1) "zhangsan"
2) "66"
3) "sunwei"
4) "75.5"
5) "Lucy"
6) "76"
127.0.0.1:6379[5]> zrevrangebyscore score (66 +inf
(empty list or set)
127.0.0.1:6379[5]> zrangebyscore score (66 +inf
1) "sunwei"
2) "Lucy"
3) "Tom"
4) "shma"
127.0.0.1:6379[5]> zrangebyscore score  -inf 98)
(error) ERR min or max is not a float
127.0.0.1:6379[5]> zrangebyscore score (66 98 limit 1 2
1) "Lucy"
2) "Tom"
127.0.0.1:6379[5]> zincrby score 10 shma
"108"
127.0.0.1:6379[5]> zcard score
(integer) 5
127.0.0.1:6379[5]> zrem score Tom
(integer) 1