Memcached 是一個高性能的分佈式內存對象緩存系統，用於動態Web應用以減輕數據庫負載。它通過在內存中緩存數據和對象來減少讀取數據庫的次數，從而提高動態、數據庫驅動網站的速度。
安裝Memcached
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yum -y install memcached |
啟動Memcached
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service memcached start ss -tnl | grep 11211 |
安裝Memcached PHP擴展
安裝Memcache
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tar xf memcache-2.2.7.tgz cd memcache-2.2.7 /usr/local/php/bin/phpize ./configure --with-php-config=/usr/local/php/bin/php-config --enable-memcache make && make install |
上述安裝完後會有類似以下的提示：
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Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-non-zts-20100525/ |
編輯/etc/php.ini，在「動態模塊」相關的位置添加如下一行來載入memcache擴展：
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vim /etc/php.ini extension=/usr/local/php/lib/php/extensions/no-debug-non-zts-20100525/memcache.so |
而後對memcached功能進行測試，在網站目錄中建立測試頁面test.php，添加如下內容：
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<?php $mem = new Memcache; $mem->connect("127.0.0.1", 11211) or die("Could not connect"); $version = $mem->getVersion(); echo "Server's version: ".$version."<br/>\n"; $mem->set('hellokey', 'Hello World', 0, 600) or die("Failed to save data at the memcached server"); echo "Store data in the cache (data will expire in 600 seconds)<br/>\n"; $get_result = $mem->get('hellokey'); echo "$get_result is from memcached server."; ?> |
簡易的Memcache 安裝腳本
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wget -c http://soft.vpser.net/lib/libevent/libevent-2.0.13-stable.tar.gz tar zxvf libevent-2.0.13-stable.tar.gz cd libevent-2.0.13-stable/ ./configure --prefix=/usr/local/libevent make&& make install cd ../ echo "/usr/local/libevent/lib/" >> /etc/ld.so.conf ln -s /usr/local/libevent/lib/libevent-2.0.so.5 /lib/libevent-2.0.so.5 ldconfig wget -c http://soft.vpser.net/web/memcached/memcached-1.4.7.tar.gz tar zxvf memcached-1.4.7.tar.gz cd memcached-1.4.7/ ./configure --prefix=/usr/local/memcached make &&make install cd ../ ln /usr/local/memcached/bin/memcached /usr/bin/memcached cp conf/memcached-init /etc/init.d/memcached chmod +x /etc/init.d/memcached useradd -s /sbin/nologin nobody if [ -s /etc/debian_version ]; then update-rc.d -f memcached defaults elif [ -s /etc/redhat-release ]; then chkconfig --level 345 memcached on fi echo "Copy Memcached PHP Test file..." cp conf/memcached.php /home/wwwroot/memcached.php echo "Starting Memcached..." /etc/init.d/memcached start |
編輯/etc/php.ini，在「動態模塊」相關的位置添加如下一行來載入memcache擴展
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extension=/usr/local/php/lib/php/extensions/no-debug-non-zts-20100525/memcache.so |
