Memcached 搭建过程

原文链接：http://www.open-open.com/lib/view/open1324368235733.html

安装 memcached 服务端

yum -y install libevent libevent-devel
#需要 libevent 支持

cd /opt
rm -rf memcached-1.2.0.tar.gz
wget http://192.168.0.97/download/linux/cache/memcached-1.2.0.tar.gz
rm -rf memcached-1.2.0
tar -zxf memcached-1.2.0.tar.gz
cd /opt/memcached-1.2.0
./configure –with-libevent=
make
make install

2、安装 memcache 客户端

cd /opt
rm -rf memcache-2.2.5.tgz
wget http://192.168.0.97/download/linux/cache/memcache-2.2.5.tgz
rm -rf memcache-2.2.5
tar -zxf memcache-2.2.5.tgz
cd /opt/memcache-2.2.5
/usr/local/php/bin/phpize
./configure –enable-memcache –with-php-config=/usr/local/php/bin/php-config –with-zlib-dir
make
make install

# 修改php.ini

- – - – -
vi /etc/php.ini
/extension_dir =
iextension=memcache.so
extension_dir = “/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/”
#
- – - – - -

# 重启 apache php生效
/usr/local/apache2/bin/apachectl restart

3、一般的维护开启关闭查看状态

开启memcache 服务端
/usr/local/bin/memcached -d -m 128 -u root -l 192.168.0.97 -c 256 -P /tmp/memcached.pid

关闭memcache 服务端
kill `cat /tmp/memcached.pid`

写成脚本
vi /etc/init.d/memcache_start.sh
i/usr/local/bin/memcached -d -m 128 -u root -l 192.168.0.97 -c 256 -P /tmp/memcached.pid
chmod a+x /etc/init.d/memcache_start.sh

vi /etc/init.d/memcache_stop.sh
ikill `cat /tmp/memcached.pid`
chmod a+x /etc/init.d/memcache_start.sh

查看memcache状态
telnet 192.168.0.98 11211
输入stats查询状态
stats
STAT pid 8601
STAT uptime 696
STAT time 1245832689
STAT version 1.2.0
STAT pointer_size 64
STAT rusage_user 0.007998
STAT rusage_system 0.030995
STAT curr_items 1
STAT total_items 1
STAT bytes 76
STAT curr_connections 2
STAT total_connections 4
STAT connection_structures 3
STAT cmd_get 1
STAT cmd_set 1
STAT get_hits 1
STAT get_misses 0
STAT bytes_read 97
STAT bytes_written 620
STAT limit_maxbytes 134217728
END

-d选项是启动一个守护进程，
-m是分配给Memcache使用的内存数量，单位是MB，我这里是10MB，
-u是运行Memcache的用户，我这里是root，
-l是监听的服务器IP地址，如果有多个地址的话，我这里指定了服务器的IP地址192.168.22.200，
-p是设置Memcache监听的端口，我这里设置了12000，最好是1024以上的端口，
-c选项是最大运行的并发连接数，默认是1024，我这里设置了256，按照你服务器的负载量来设定，
-P是设置保存Memcache的pid文件，我这里是保存在 /tmp/memcached.pid，

4、在客户端使用php测试

1
<?php

2
$mem=new Memcache;

3
$mem->connect(“192.168.0.97″,11211);

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$mem->set(‘key’,'This is a test!’, 0, 60);

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$val=$mem->get(‘key’);

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echo $val;

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?>