memcache是一款流行的緩存產品，它分為兩個部分：一個是運行在服務器端的memcached進程，一個是在客戶端進行調用獲取緩存中數據客戶端，例如比較常用的PHP客戶端。這裡，記錄一下安裝服務器端的memcached的過程，比較容易。
准備軟件包
- libevent-2.0.16-stable.tar.gz [http://cloud.github.com/downloads/libevent/libevent/libevent-2.0.16-stable.tar.gz]
- memcached-1.4.10.tar.gz [http://memcached.googlecode.com/files/memcached-1.4.10.tar.gz]
- memcache-3.0.6.tgz [http://pecl.php.net/get/memcache-3.0.6.tgz]
安裝配置
安裝libevent-2.0.16
安裝libevent-2.0.16的過程如下所示：
- root@ www.linuxidc.com:/home/shirdrn# tar -xvzf libevent-2.0.16-stable.tar.gz
- root@ www.linuxidc.com:/home/shirdrn# cd libevent-2.0.16-stable/
- root@ www.linuxidc.com:/home/shirdrn/libevent-2.0.16-stable# ./configure
- root@ www.linuxidc.com:/home/shirdrn/libevent-2.0.16-stable# make
- root@ www.linuxidc.com:/home/shirdrn/libevent-2.0.16-stable# make install
安裝完成以後，通過下面的方式來驗證是否安裝成功：
- root@ www.linuxidc.com:/usr/local# ls -al /usr/local/lib | grep libevent
- lrwxrwxrwx 1 root root 21 2011-12-15 14:52 libevent-2.0.so.5 -> libevent-2.0.so.5.1.4
- -rwxr-xr-x 1 root root 1072325 2011-12-15 14:52 libevent-2.0.so.5.1.4
- -rw-r--r-- 1 root root 1683924 2011-12-15 14:52 libevent.a
- lrwxrwxrwx 1 root root 26 2011-12-15 14:52 libevent_core-2.0.so.5 -> libevent_core-2.0.so.5.1.4
- -rwxr-xr-x 1 root root 646606 2011-12-15 14:52 libevent_core-2.0.so.5.1.4
- -rw-r--r-- 1 root root 1045954 2011-12-15 14:52 libevent_core.a
- -rwxr-xr-x 1 root root 974 2011-12-15 14:52 libevent_core.la
- lrwxrwxrwx 1 root root 26 2011-12-15 14:52 libevent_core.so -> libevent_core-2.0.so.5.1.4
- lrwxrwxrwx 1 root root 27 2011-12-15 14:52 libevent_extra-2.0.so.5 -> libevent_extra-2.0.so.5.1.4
- -rwxr-xr-x 1 root root 450238 2011-12-15 14:52 libevent_extra-2.0.so.5.1.4
- -rw-r--r-- 1 root root 638042 2011-12-15 14:52 libevent_extra.a
- -rwxr-xr-x 1 root root 981 2011-12-15 14:52 libevent_extra.la
- lrwxrwxrwx 1 root root 27 2011-12-15 14:52 libevent_extra.so -> libevent_extra-2.0.so.5.1.4
- -rwxr-xr-x 1 root root 939 2011-12-15 14:52 libevent.la
- lrwxrwxrwx 1 root root 29 2011-12-15 14:52 libevent_openssl-2.0.so.5 -> libevent_openssl-2.0.so.5.1.4
- -rwxr-xr-x 1 root root 97847 2011-12-15 14:52 libevent_openssl-2.0.so.5.1.4
- -rw-r--r-- 1 root root 131388 2011-12-15 14:52 libevent_openssl.a
- -rwxr-xr-x 1 root root 1010 2011-12-15 14:52 libevent_openssl.la
- lrwxrwxrwx 1 root root 29 2011-12-15 14:52 libevent_openssl.so -> libevent_openssl-2.0.so.5.1.4
- lrwxrwxrwx 1 root root 30 2011-12-15 14:52 libevent_pthreads-2.0.so.5 -> libevent_pthreads-2.0.so.5.1.4
- -rwxr-xr-x 1 root root 22414 2011-12-15 14:52 libevent_pthreads-2.0.so.5.1.4
- -rw-r--r-- 1 root root 19526 2011-12-15 14:52 libevent_pthreads.a
- -rwxr-xr-x 1 root root 1002 2011-12-15 14:52 libevent_pthreads.la
- lrwxrwxrwx 1 root root 30 2011-12-15 14:52 libevent_pthreads.so -> libevent_pthreads-2.0.so.5.1.4
- lrwxrwxrwx 1 root root 21 2011-12-15 14:52 libevent.so -> libevent-2.0.so.5.1.4
安裝memcached-1.4.10
1、安裝memcached-1.4.10的過程，如下所示：
- root@ www.linuxidc.com:/home/shirdrn# tar -xvzf memcached-1.4.10.tar.gz
- root@ www.linuxidc.com:/home/shirdrn# cd memcached-1.4.10/
- root@ www.linuxidc.com:/home/shirdrn/memcached-1.4.10# ./configure --prefix=/usr/local/memcached --with-libevent=/usr/local
- root@ www.linuxidc.com:/home/shirdrn/memcached-1.4.10# make
- root@ www.linuxidc.com:/home/shirdrn/memcached-1.4.10# make install
2、測試memcached-1.4.10安裝是否成功：
- root@ www.linuxidc.com:/usr/local# ls -al /usr/local/memcached/bin/mem*
- -rwxr-xr-x 1 root root 365926 2011-12-15 14:54 /usr/local/memcached/bin/memcached
啟動memcached服務：
- /usr/local/memcached/bin/memcached -d -m 10 -u root -l 192.168.0.184 -p 19830 -c 5000 -P /tmp/memcached.pid
執行上面的命令行，將啟動memcached服務進程，並且進程號存儲在/tmp/memcached.pid文件中。
上述命令行中選項的含義簡介如下：
- -d 指定memcached進程作為一個守護進程啟動
- -m 指定分配給memcached使用的內存，單位是MB
- -u 指定運行memcached的用戶
- -l 指定監聽的服務器IP地址，如果有多個地址的話，使用逗號分隔，格式可以為“IP地址:端口號”，例如：-l 192.168.0.184:19830,192.168.0.195:13542；端口號也可以通過-p選項指定
- -p 指定memcached監聽的端口，要保證該端口號未被占用
- -c 指定是最大運行的並發連接數，默認是1024
- -P 指定保存memcached進程的pid文件
