APC

Enable Zend OPcache for PHP 5.5 or Install ZendOpcache for PHP 5.3 or PHP 5.4

Zend Opcache is part of PHP 5.5, however, it's not enabled by default. It's a successor to APC cache--meaning APC cache is never going to be compatible with PHP 5.5 or higher

Opcache is also around 10% faster than APC, and more stable.

However, if you're on PHP 5.3 or PHP 5.4, you can still use ZendOpCache, and it should still be a bit faster than APC

Enable OpCache (part of with PHP 5.5)

vi /usr/local/lib/php.ini

Paste this under your extension_dir

Tags: Linux cache APC opcache

How to install XCache 3.0 from source

Alright... So APC has been pretty unstable for me on 2 separate servers running PHP 5.3.x and PHP 5.4.x. So I figured I'd give XCache a try after reading about similar problems with APC.

Anyhow...

Here's how to install XCache 3.X from source on CentOS

Get the latest version of XCache from here: http://xcache.lighttpd.net/#Downloads

Latest version at the time of this writing is XCache 3.0.1

Tags: XCache APC Linux Server how-to

How to install APC on CentOS and DirectAdmin

cd /usr/local/src
mount -o remount,exec,suid /tmp
yum install autoconf 
yum install php-pear 
yum install php-devel 
yum install httpd-devel 
yum install pcre-devel 
wget http://pecl.php.net/get/APC
tar xvfz APC-VERSION.tgz
cd APC-VERSION
phpize
whereis php-config 

This will give you the location of php-config, which you will put after --with-php-config=

Tags: Server PHP APC