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
| 代码如下 | 复制代码 |
| $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'; |
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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 | 复制代码 |
| $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' ); $conf['memcache_bins'] = array( 'cache' => 'default', 'cache_filter' => 'cluster2', 'cache_menu' => 'cluster2' ); |
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一切就绪。
最后讲解一下单台机器如何配置多个memcache实例，即单台机器的memcache集群搭建。
我们需要修改2个文件，一个是启动脚本/etc/init.d/memcached-multi，另一个是配置文件/etc/sysconfig/memcached。
| 代码如下 | 复制代码 |
| /etc/sysconfig/memcached | |
是用来配置多个memcache实例的大小
| 代码如下 | 复制代码 |
| PORT="11211" USER="memcached" MAXCONN="1024" CACHESIZE="512" OPTIONS="" MULTIBUCKET="2" CACHESIZEARRAY[1]="1024" CACHESIZEARRAY[2]="128"/etc/init.d/memcached-multi |
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是用来启动memcache集群。（start、stop、restart）
| 代码如下 | 复制代码 |
| #! /bin/sh # # chkconfig: - 55 45 # description: The memcached daemon is a network memory cache service. # processname: memcached # config: /etc/sysconfig/memcached # pidfile: /var/run/memcached/memcached.pid # Standard LSB functions #. /lib/lsb/init-functions # Source function library. . /etc/init.d/functions PORT=11211 USER=memcached MAXCONN=1024 CACHESIZE=64 OPTIONS="" MULTIBUCKET="" if [ -f /etc/sysconfig/memcached ];then . /etc/sysconfig/memcached fi [ -z "$MULTIBUCKET" ] && MULTIBUCKET=1 # Check that networking is up. . /etc/sysconfig/network if [ "$NETWORKING" = "no" ] then exit 0 fi 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 fi 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 fi } 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 |
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至此一些就绪。
时间： 2025-01-21 08:50:34