Redis is an open source, advanced key-value store. It is often referred to as a data structure server since keys can containstrings, hashes, lists, sets and sorted sets.
-- from http://redis.io/
redis 是一个基于内存的高性能key-value数据库，数据都保存在内存中定期刷新到磁盘，以极高的读写效率而备受关注。他的特点是支持各种数据结构，stirng,hashes, list,set,和sorted sets
client端对于不同数据结构是使用不同的命令
这里说一下redis的安装
虚拟机环境： centos
1 wget make 安装
wget http://download.redis.io/redis-stable.tar.gz
tar xvzf redis-stable.tar.gz
cd redis-stable
make
注： 这里记录一下我安装过程中出现的问题:
make: Warning: File `Makefile' has modification time 5.4e+06 s in the future
cd src && make all
make[1]: Entering directory `/redis/redis-2.4.7/src'
make[1]: Warning: File `Makefile' has modification time 5.4e+06 s in the future
MAKE hiredis
make[2]: Entering directory `/redis/redis-2.4.7/deps/hiredis'
make[2]: Warning: File `Makefile' has modification time 5.4e+06 s in the future
cc -c -std=c99 -pedantic -O3 -fPIC -Wall -W -Wstrict-prototypes -Wwrite-strings -g -ggdb net.c
make[2]: cc: Command not found
make[2]: *** [net.o] Error 127
make[2]: Leaving directory `/redis/redis-2.4.7/deps/hiredis'
make[1]: *** [dependencies] Error 2
make[1]: Leaving directory `/redis/redis-2.4.7/src'
make: *** [all] Error 2
第一个问题
make: Warning: File `Makefile' has modification time 5.4e+06 s in the future
系统时间调整错了，调过来就好了
第二个问题：
make[2]: Entering directory `/redis/redis-2.4.7/deps/hiredis'
cc -c -std=c99 -pedantic -O3 -fPIC -Wall -W -Wstrict-prototypes -Wwrite-strings -g -ggdb net.c
make[2]: cc: Command not found
没安装gcc，
yum install gcc-c++
第三个问题：
make的时候显示
make[1]: Entering directory `/redis/redis-2.4.7/src'
which: no tclsh8.5 in (/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin)
You need 'tclsh8.5' in order to run the Redis test
没安装tcl
按照官网http://www.linuxfromscratch.org/blfs/view/cvs/general/tcl.html 上的安装
安装完成之后，make成功！
安装成功之后会在src文件夹内有redis-server和redis-cli两个命令
建议将其放到bin下
sudo cp redis-server /usr/local/bin/
sudo cp redis-cli /usr/local/bin/
好了，现在redis就安装成功了
2 测试redis安装情况
我只在一台虚拟机上安装了redis，所以这台虚拟机既是服务器，又是客户端
测试：
1 使用secureRt打开一个会话，redis-server，让其作为服务器运行
[19282] 19 Feb 23:52:57 - 1 clients connected (0 slaves), 726248 bytes in use
[19282] 19 Feb 23:53:02 - DB 0: 1 keys (0 volatile) in 4 slots HT.
[19282] 19 Feb 23:53:02 - 1 clients connected (0 slaves), 726248 bytes in use
[19282] 19 Feb 23:53:07 - DB 0: 1 keys (0 volatile) in 4 slots HT.
[19282] 19 Feb 23:53:07 - 1 clients connected (0 slaves), 726248 bytes in use
2 打开另一个会话：
ast login: Tue Feb 19 22:49:49 2013 from 192.168.1.103
set key和get key都正确
redis搭建测试通过
参考文章：
http://redis.io/topics/quickstart
http://hi.baidu.com/thinkinginlamp/blog/item/3358c93d174e35ce9f3d62bf.html
作者：yjf512（轩脉刃）
出处：http://www.cnblogs.com/yjf512/
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