安装php的memcached模块和扩展支持sasl

memcached的1.2.4及以上增加了CAS(Check and Set)协议,对于同一key的多进行程的并发处理问题。这种情况其实根数据库很像，如果同时有几个进程对同一个表的同一数据进行更新的话，那会不会打架呢，哈哈。数据库里面可以锁定整张表，也可以锁定表里面一行的功能，其实memcached加入的CAS根这个差不多。
php的扩展memcache，不支持cas，所以我们要装memcached扩展，memcached扩展是基于libmemcached，所以要先安装libmemcached

tar zxvf libmemcached-0.42.tar.gz
cd libmemcached-0.42

./configure --prefix=/usr/local/libmemcached --with-memcached --enable-sasl

make && make install

tar zxvf memcached-1.0.2.tar.gz
cd memcached-1.0.2
/usr/local/php/bin/phpize

./configure --enable-memcached --with-php-config=/usr/local/php/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached --enable-memcached-sasl

make && make install

vi /usr/local/php/lib/php.ini
加上extension=memcached.so重起一下服务就可以了。

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【centosphp安装memcached扩展支持sasl】

【http://www.2cto.com/os/201411/353283.html】

1.安装sasl

1 2	`yum install cyrus-sasl-lib.x86_64` `yum install cyrus-sasl-devel.x86_64`

2.下载libmemcached

1	`wget https://launchpad.net/libmemcached/1.0/1.0.16/+download/libmemcached-1.0.16.tar.gz`

3,编译安装

tar zxvf libmemcached-1.0.16.tar.gz

cd libmemcached-1.0.16

./configure --prefix=/usr/local/libmemcached --enable-sasl

make

make install

4.安装memcached安装

wget http://pecl.php.net/get/memcached-2.1.0.tgz

tar zxvf memcached-2.1.0.tgz

cd memcached-2.1.0

1	`获得 <pre name="code"class="python">php-config目录 whereis <span style="font-family: Arial, Helvetica, sans-serif;">php-config</span>`

phpize./configure --with-php-config=php-config目录 --with-libmemcached-dir=/usr/local/libmemcached/ --enable-memcached-sasl

make

1	`make install`

5.修改对应的配置

增加

1	`vi /etc/php.d/memcache.ini(之前安装过memcache ) 或者直接放到 php.ini 文件内`

1 2	`extension=memcached.so` `memcached.use_sasl =1`

最后重启web服务器 nginx 或者 apache

wget http://pecl.php.net/get/memcached-2.1.0.tgz

tar zxvf memcached-2.1.0.tgz

cd memcached-2.1.0

1	`获得 <pre name="code"class="python">php-config目录`