Redis

安装Redis环境

要在 Ubuntu 上安装 Redis，打开终端，然后输入以下命令：

$sudo apt-get update
$sudo apt-get install redis-server

这将在您的计算机上安装Redis

启动 Redis

$redis-server

查看 redis 是否还在运行

$redis-cli

这将打开一个 Redis 提示符，如下图所示：

redis 127.0.0.1:6379>

在上面的提示信息中：127.0.0.1 是本机的IP地址，6379是 Redis 服务器运行的端口。现在输入 PING 命令，如下图所示：

redis 127.0.0.1:6379> ping
PONG

这说明现在你已经成功地在计算机上安装了 Redis。

rico@rico-virtual-machine:~$ ps -ef |grep redis
redis      4262      1  0 09:14 ?        00:00:02 /usr/bin/redis-server 127.0.0.1:6379
rico       5614   5061  0 09:38 pts/0    00:00:00 grep --color=auto redis
rico@rico-virtual-machine:~$ redis-cli
127.0.0.1:6379> set name jack
OK
127.0.0.1:6379> get name
"jack"
127.0.0.1:6379> set name tom
OK
127.0.0.1:6379> get name
"tom"
127.0.0.1:6379> set age 22
OK
127.0.0.1:6379> keys *
1) "age"
2) "name"
127.0.0.1:6379>

127.0.0.1:6379> help set

  SET key value [EX seconds] [PX milliseconds] [NX|XX]
  summary: Set the string value of a key
  since: 1.0.0
  group: string

127.0.0.1:6379> set name Rain ex 3
OK
127.0.0.1:6379> get name
(nil)
127.0.0.1:6379> get name
(nil)
127.0.0.1:6379> set name Rain ex 3
OK
127.0.0.1:6379> get name
"Rain"
127.0.0.1:6379> get name
(nil)
127.0.0.1:6379> get name
(nil)
127.0.0.1:6379> get name
(nil)
127.0.0.1:6379> set name sss px 3000
OK
127.0.0.1:6379> get name
"sss"
127.0.0.1:6379> get name
(nil)
127.0.0.1:6379> get name
(nil)
127.0.0.1:6379> set name sssfff nx 
OK
127.0.0.1:6379> get name
"sssfff"
127.0.0.1:6379> set name sssffdddf nx 
(nil)
127.0.0.1:6379> get name
"sssfff"
127.0.0.1:6379> set name sssff11f xx
OK
127.0.0.1:6379> get name
"sssff11f"
127.0.0.1:6379> set name sssff11f2 xx
OK
127.0.0.1:6379> get name
"sssff11f2"
127.0.0.1:6379> set age1 df2 xx
(nil)
127.0.0.1:6379> keys *
1) "age"
2) "name"

 1 rico@rico-virtual-machine:~$ redis-cli
 2 127.0.0.1:6379> hset info name jack
 3 (integer) 1
 4 127.0.0.1:6379> hset info age 12
 5 (integer) 1
 6 127.0.0.1:6379> hset info id stu110
 7 (integer) 1
 8 127.0.0.1:6379> hget info
 9 (error) ERR wrong number of arguments for 'hget' command
10 127.0.0.1:6379> hget info name
11 "jack"
12 127.0.0.1:6379> hget info age
13 "12"
14 127.0.0.1:6379> hget info id
15 "stu110"
16 127.0.0.1:6379> hkeys info
17 1) "name"
18 2) "age"
19 3) "id"
20 127.0.0.1:6379> hmget info name age
21 1) "jack"
22 2) "12"
23 127.0.0.1:6379> help hmset
24 
25   HMSET key field value [field value ...]
26   summary: Set multiple hash fields to multiple values
27   since: 2.0.0
28   group: hash
29 
30 127.0.0.1:6379> hmset info name tom age 33 hobbies football
31 OK
32 127.0.0.1:6379> hkeys info
33 1) "name"
34 2) "age"
35 3) "id"
36 4) "hobbies"
37 127.0.0.1:6379> hmget info id name age
38 1) "stu110"
39 2) "tom"
40 3) "33"
41 127.0.0.1:6379> hmget info id name age hobbies
42 1) "stu110"
43 2) "tom"
44 3) "33"
45 4) "football"
46 127.0.0.1:6379> hgetall info
47 1) "name"
48 2) "tom"
49 3) "age"
50 4) "33"
51 5) "id"
52 6) "stu110"
53 7) "hobbies"
54 8) "football"
55 127.0.0.1:6379> hlen info
56 (integer) 4
57 127.0.0.1:6379> hvals info
58 1) "tom"
59 2) "33"
60 3) "stu110"
61 4) "football"
62 127.0.0.1:6379> hkeys info
63 1) "name"
64 2) "age"
65 3) "id"
66 4) "hobbies"
67 127.0.0.1:6379> hexists info id
68 (integer) 1
69 127.0.0.1:6379> hdel info id
70 (integer) 1
71 127.0.0.1:6379> hexists info id
72 (integer) 0
73 127.0.0.1:6379> hdel info id
74 (integer) 0
75 127.0.0.1:6379>

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安装Redis环境

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