Drupal7中配置Memcache方法详解_php教程_php教程

Memcache的配置就不多说,drupal由于模块较多,数据库调用频繁,因此memcache是drupal站点中必备的配置,本文大概列一下Drupal7中关于memcache的配置情况,以方便大家查阅。

1.安装memcache服务以及启动memcached.

2.安装drupal的memcache模块.(http://drupal.org/project/memcache)

3.配置settings.php

实例代码如下:

$conf['cache_backends'][] = 'sites/all/modules/memcache/memcache.inc';

// The 'cache_form' bin must be assigned no non-volatile storage.

$conf['cache_class_cache_form'] = 'DrupalDatabaseCache';

$conf['cache_default_class'] = 'MemCacheDrupal';

$conf['memcache_key_prefix'] = 'something_unique';

注意,需要将memcache.inc的文件路径写正确,如Drupal模块目录组织方式总结中提到，我们一般将memcache模块会放置在contrib文件夹下面,因此路径可能是 sites/all/modules/contrib/memcache/memcache.inc,此外memcache_key_prefix最好设置一下。

4.多个memcachd服务。

默认情况下,如果不配置memcache_servers以及memcache_bins的话,Drupal会认为只有一个server,即127.0.0.1:11211,如果有多个memcache实例的话,需要添加如下配置,代码如下:

$conf['memcache_servers'] = array(

'10.1.1.1:11211' => 'default',

'10.1.1.1:11212' => 'default',

'10.1.1.2:11211' => 'default',

'10.1.1.3:11211' => 'cluster2',

'10.1.1.4:11211' => 'cluster2'

);

$conf['memcache_bins'] = array(

'cache' => 'default',

'cache_filter' => 'cluster2',

'cache_menu' => 'cluster2'

);

一切就绪,最后讲解一下单台机器如何配置多个memcache实例,即单台机器的memcache集群搭建。

我们需要修改2个文件,一个是启动脚本/etc/init.d/memcached-multi,另一个是配置文件/etc/sysconfig/memcached,代码如下:

/etc/sysconfig/memcached

是用来配置多个memcache实例的大小,代码如下:

PORT="11211"

USER="memcached"

MAXCONN="1024"

CACHESIZE="512"

OPTIONS=""

MULTIBUCKET="2"

CACHESIZEARRAY[1]="1024"

CACHESIZEARRAY[2]="128"/etc/init.d/memcached-multi

是用来启动memcache集群,(start、stop、restart),代码如下:

#! /bin/sh

# chkconfig: - 55 45

# description: The memcached daemon is a network memory cache service.

# processname: memcached

# config: /etc/sysconfig/memcached

# pidfile: /var/run/memcached/memcached.pid

# Standard LSB functions

#. /lib/lsb/init-functions

# Source function library.

. /etc/init.d/functions

PORT=11211

USER=memcached

MAXCONN=1024

CACHESIZE=64

OPTIONS=""

MULTIBUCKET=""

if [ -f /etc/sysconfig/memcached ];then

. /etc/sysconfig/memcached

[ -z "$MULTIBUCKET" ] && MULTIBUCKET=1

# Check that networking is up.

. /etc/sysconfig/network

if [ "$NETWORKING" = "no" ]

then

exit 0

RETVAL=0

prog="memcached"

start () {

echo -n $"Starting $prog: "

# insure that /var/run/memcached has proper permissions

if [ "`stat -c %U /var/run/memcached`" != "$USER" ]; then

chown $USER /var/run/memcached

for i in `/usr/bin/seq 1 $MULTIBUCKET`; do

THISCACHESIZE=$CACHESIZE

[ ${#CACHESIZEARRAY[*]} -gt 0 -a ${CACHESIZEARRAY[$i]:-0} -gt 0 ] && THISCACHESIZE=${CACHESIZEARRAY[$i]}

daemon --pidfile /var/run/memcached/memcached.pid memcached -d -p $PORT -u $USER -m $THISCACHESIZE -c $MAXCONN -P /var/run/memcached/memcached-$i.pid $OPTIONS

let RETVAL=$RETVAL+$?

let PORT=$PORT+1

done

echo

[ $RETVAL -eq 0 ] && touch /var/lock/subsys/memcached

}

stop () {

echo -n $"Stopping $prog: "

for i in `/usr/bin/seq 1 $MULTIBUCKET`; do

killproc -p /var/run/memcached/memcached-$i.pid /usr/bin/memcached

let RETVAL=$RETVAL+$?

done

echo

if [ $RETVAL -eq 0 ] ; then

rm -f /var/lock/subsys/memcached

rm -f /var/run/memcached.pid

}

restart () {

stop

start

}

# See how we were called.

case "$1" in

start)

start

;;

stop)

stop

;;

status)

echo "Warning: This status check is laughable. Inspect netstat or ps output manually."

status memcached

;;

restart|reload|force-reload)

restart

;;

condrestart)

[ -f /var/lock/subsys/memcached ] && restart || :

;;

echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"

exit 1

esac

exit $RETVAL

至此一些就绪.

(责任编辑：最模板)