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Redis 安装配置

 
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Redis是一个key-value存储系统。和Memcached类似,但是解决了断电后数据完全丢失的情况,而且她支持更多无化的value类型,除了和string外,还支持lists(链表)、sets(集合)和zsets(有序集合)几种数据类型。这些数据类型都支持push/pop、add/remove及取交集并集和差集及更丰富的操作,而且这些操作都是原子性的。


Redis的代码遵循ANSI-C编写,可以在所有POSIX系统(如Linux,*BSD, Mac OS X, Solaris等)上安装运行。而且Redis并不依赖任何非标准库,也没有编译参数必需添加。redis的安装出奇的简单,这可能也是他风靡的一个原因,让人很容易上手


1 下载

下载地址:Redis Download,最新稳定版redis-2.6.9.tar.gz

文档资料: Redis Document


2 安装

$ wget http://redis.googlecode.com/files/redis-2.6.9.tar.gz
$ tar xzf redis-2.6.9.tar.gz
$ cd redis-2.6.9
$ make
$ sudo make install

3 命令

1) 修改配置文件

vim /opt/redis-2.8.7/redis.conf

################################ GENERAL #####################################
# By default Redis does not run as a daemon. Use 'yes' if you need it.
# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
daemonize
yes

# When running daemonized, Redis writes a pid file in /var/run/redis.pid by
# default. You can specify a custom pid file location here.
pidfile /var/run/redis.pid

# Accept connections on the specified port, default is 6379.
# If port 0 is specified Redis will not listen on a TCP socket.
port 6379


2) 启动服务器

/usr/local/bin/redis-server /opt/redis-2.8.7/redis.conf


2) 开启客户端

src/redis-cli

homer@ubuntu:/opt/redis-2.8.7$ /opt/redis-2.8.7/src/redis-cli
127.0.0.1:6379> set foo "bar"
OK
127.0.0.1:6379> get foo
"bar"


连接远程redis:redis-cli -h 172.118.10.114 -p 6399 // 指定 ip 服务器 和 redis 端口号


3) 测试命令

redis 127.0.0.1:6379> set myname "yanggang"
OK
redis 127.0.0.1:6379> get myname
"yanggang"
redis 127.0.0.1:6379> set myblog "http://blog.csdn.net/sunboy_2050"
OK
redis 127.0.0.1:6379> get myblog
"http://blog.csdn.net/sunboy_2050"


帮助命令

127.0.0.1:6379> help
redis-cli 2.8.7
Type: "help @<group>" to get a list of commands in <group>
      "help <command>" for help on <command>
      "help <tab>" to get a list of possible help topics
      "quit" to exit

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> help get

  GET key
  summary: Get the value of a key
  since: 1.0.0
  group: string

127.0.0.1:6379> help expire

  EXPIRE key seconds
  summary: Set a key's time to live in seconds
  since: 1.0.0
  group: generic

127.0.0.1:6379> help expireat

  EXPIREAT key timestamp
  summary: Set the expiration for a key as a UNIX timestamp
  since: 1.2.0
  group: generic


4 客户端编程

代码:

import redis.clients.jedis.Jedis;

public class JedisTest {

	public static void main(String[] args) {
		Jedis jedis = new Jedis("localhost");
		jedis.set("foo", "bar");
		String value = jedis.get("foo");
		
		System.out.print("foo's value : " + value);
	}
}
运行结果:

foo's value : bar

python 连接 Redis

1)前往redis-py下载发布版本release,最新发布版本:redis-py-2.8.0.zip

2)解压redis-py-2.8.0.zip:unzip redis-py-2.8.0.zip, 安装:sudo python setup.py install

3)验证安装成功:

# python
>>> import redis
>>>

使用实例,请参见我的博客Python 学习入门(4)—— 连接MySQL



参考推荐:

Redis 入门

Redis 的安装配置介绍(推荐)

Redis安装及配置主从复制


redis memcache 性能比较

memcache和redis本质区别


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