php.ini

$ sudo nano /etc/php5/apache2/php.ini

Y añadimos:

; Memcache
memcache.hash_strategy="consistent"

settings.php

Configuración del cache para nuestro sitio. Esta sacado de lullabot.

 './sites/all/modules/memcache/memcache.inc',
   // or
   'cache_inc' => './sites/all/modules/memcache/memcache.db.inc',
  'memcache_servers' => array(
    'localhost:11211' => 'default',
    'localhost:11212' => 'content',
    'localhost:11213' => 'filter',
    'localhost:11214' => 'menu',
    'localhost:11215' => 'page',
    'localhost:11216' => 'views',
  ),
  'memcache_bins' => array(
    'cache' => 'default',
    'cache_content' => 'content',
    'cache_filter' => 'filter',
    'cache_menu' => 'menu',
    'cache_page' => 'page',
    'cache_views' => 'views',
  ),
);
?>

Servidor de memcache

Editamos el fichero de memcache y lo configuramos con los siguientes parámetros personalizados.

$ sudo nano /etc/init.d/memcache

Estos parámetros variaran según el hardware y aplicación.

#!/bin/bash
prog="memcached"
start() {
    echo -n $"Starting $prog "
    # Sessions cache.
    memcached -m 16 -l 0.0.0.0 -p 11211 -d -u nobody
    # Default cache.
    memcached -m 32 -l 0.0.0.0 -p 11212 -d -u nobody
    # Block cache.
    memcached -m 32 -l 0.0.0.0 -p 11213 -d -u nobody
    # Content cache. Holds fully loaded content type structures.
    memcached -m 16 -l 0.0.0.0 -p 11214 -d -u nobody
    # Filter cache. Usually the busiest cache after the default.
    memcached -m 32 -l 0.0.0.0 -p 11215 -d -u nobody
    # Form cache.
    memcached -m 32 -l 0.0.0.0 -p 11216 -d -u nobody
    # Menu cache.
    memcached -m 32 -l 0.0.0.0 -p 11217 -d -u nobody
    # Page cache. Bigger than most other caches.
    memcached -m 128 -l 0.0.0.0 -p 11218 -d -u nobody
    # Views definition cache.
    memcached -m 1 -l 0.0.0.0 -p 11219 -d -u nobody
    # Views data cache (may need to be increased if heavily used).
    memcached -m 32 -l 0.0.0.0 -p 11220 -d -u nobody

    # More caches that might be added later:
    # Users table.
    #/usr/bin/memcached -m 24 -l 0.0.0.0 -p 11219 -d -u nobody
    # Path source cache.
    #/usr/bin/memcached -m 4 -l 0.0.0.0 -p 11220 -d -u nobody
    # Path destination cache.
    #/usr/bin/memcached -m 6 -l 0.0.0.0 -p 11221 -d -u nobody
    RETVAL=$?
    echo
    return $RETVAL
}

stop() {
    if test "x`pidof memcached`" != x; then
        echo -n $"Stopping $prog "
        killall memcached
        echo
    fi
    RETVAL=$?
    return $RETVAL
}
case "$1" in
        start)
            start
            ;;
        stop)
            stop
            ;;

        restart)
            stop
            start
            ;;
        condrestart)
            if test "x`pidof memcached`" != x; then
                stop
                start
            fi
            ;;
        *)
            echo $"Usage: $0 {start|stop|restart|condrestart}"
            exit 1
esac
exit $RETVAL

Referencias

• http://www.lullabot.com/articles/setup-memcached-mamp-sandbox-environment
• http://www.lullabot.com/articles/how_install_memcache_debian_etch
• http://drupal.org/project/memcache
• http://www.lullabot.com/articles/a_beginners_guide_to_caching_data
• http://www.howtoforge.com/installing-memcached-and-the-php5-memcache-module-on-debian-etch-apache2
• http://livebookmark.net/journal/2008/05/21/memcachephp-stats-like-apcphp/
• http://de.php.net/manual/en/memcache.installation.php#95063
• http://blogofsysadmins.com/instalar-memcached-en-centos-5-3