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Memcached는 써보았는데 Redis는 아직 테스트를 안해봐서 아래 설명만 우선링크

phpredis 설치방법은 아래 글 참조

http://opens.kr/53

세션 서버 사용 설명- https://github.com/nicolasff/phpredis#php-session-handler

phpredis can be used to store PHP sessions. To do this, configure session.save_handler andsession.save_path in your php.ini to tell phpredis where to store the sessions:

session.save_handler = redis
session.save_path = "tcp://host1:6379?weight=1, tcp://host2:6379?weight=2&timeout=2.5, tcp://host3:6379?weight=2"

php.ini에서 위에 처럼 config 수정하는 방법도 있고 소스상에서 ini_set 으로 하는 방법도 있다.

Sessions have a lifetime expressed in seconds and stored in the INI variable "session.gc_maxlifetime". You can change it with ini_set(). The session handler requires a version of Redis with the SETEXcommand (at least 2.0). phpredis can also connect to a unix domain socket: session.save_path = "unix:///var/run/redis/redis.sock?persistent=1&weight=1&database=0.

아래 처럼 테스트 하니까 잘 된다. 

1. <?php
2. ini_set('session.save_handler', 'redis');
3. ini_set('session.save_path', 'tcp://127.0.0.1:6379');
4. //unix sock의 경우 아래처럼 그리고 & 파라미터로 database등 지정할수있는듯함
5. //ini_set('session.save_path', 'unix:///var/run/redis/redis.sock?persistent=1&weight=1&database=0');
6. ?>

http://redis.io/clients 

=> 공식 사이트 들어가보면  아래 두가지를 추천하는 듯함

Predis ☺ ★ Repository JoL1hAHN Mature and supported

phpredis ☺ ★ Repository yowgi This is a client written in C as a PHP module.

$ wget https://github.com/nicolasff/phpredis/zipball/master -O phpredis.zip
$ unzip phpredis.zip 
$ ll
drwxr-xr-x  5 root root   4096 Sep  3 04:27 nicolasff-phpredis-4c1f1bc

$ cd nicolasff-phpredis-4c1f1bc/
$ phpize 
Can't find PHP headers in /usr/include/php
The php-devel package is required for use of this command.

$ yum install php-devel #PHP devel 미설치시 설치하기!
$ phpize
Configuring for:
PHP Api Version:         20121113
Zend Module Api No:      20121212
Zend Extension Api No:   220121212

$ ./configure
$ make && make install
Installing shared extensions:     /usr/lib64/php/modules/

$ cd /usr/lib64/php/modules/
$ ll | grep redis
-rwxr-xr-x 1 root root  942112 Sep 16 12:11 redis.so

##### php.conf 디렉토리에 맞게 ini 에 extension 등록하기! 안되면 php.ini등록해도됨
$ echo extension=redis.so > /etc/php.d/redis.ini 


##### 웹서버종류에 따라서 Apache Restart 또는 php-fpm restart
$ /etc/init.d/php-fpm restart

##### 최종확인
$ php -i | grep 'Redis Version'
Redis Version => 2.2.5

<?php phpinfo() ?> 
redis
Redis Support => enabled
Redis Version => 2.2.5

$ wget http://download.redis.io/releases/redis-2.8.15.tar.gz
$ tar xvfz redis-2.8.15.tar.gz 
$ cd redis-2.8.15

$ make -j4
$ make install  -j4


###### /etc/init.d/ 추가되도록 install#############################
###### vi /etc/init.d/redis_6379 열어보면 실행방식 자세히 알 수 있음

$ cd utils/
$ ./install_server.sh 

Welcome to the redis service installer
This script will help you easily set up a running redis server

Please select the redis port for this instance: [6379]  ###포트지정하면됨
Selecting default: 6379
Please select the redis config file name [/etc/redis/6379.conf] 
Selected default - /etc/redis/6379.conf
Please select the redis log file name [/var/log/redis_6379.log] 
Selected default - /var/log/redis_6379.log
Please select the data directory for this instance [/var/lib/redis/6379] 
Selected default - /var/lib/redis/6379
Please select the redis executable path [/usr/local/bin/redis-server] 
Selected config:
Port           : 6379
Config file    : /etc/redis/6379.conf ##설정파일
Log file       : /var/log/redis_6379.log ##로그파일
Data dir       : /var/lib/redis/6379     
Executable     : /usr/local/bin/redis-server
Cli Executable : /usr/local/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.
Copied /tmp/6379.conf => /etc/init.d/redis_6379
Installing service...
Successfully added to chkconfig!
Successfully added to runlevels 345!
Starting Redis server...
Installation successful!
######################################################

### redis 실행########################################
$ /etc/init.d/redis_6379 start
Starting Redis server...

### redis 중지########################################
$ /etc/init.d/redis_6379 stop
Stopping ...
Redis stopped

### 커맨드라인 콘솔모드 접속 #########################
$ redis-cli 
127.0.0.1:6379>