用mysql触发器自动更新memcache
2008-07-09 @ 14:41:39 · 作者 Volcano · 归类于 MYSQLmysql 5.1支持触发器以及自定义函数接口(UDF)的特性，如果配合libmemcache以及Memcached Functions for MySQL，就能够实现memcache的自动更新。简单记录一下安装测试步骤。
安装步骤
[*]安装memcached,这个步骤很简单，随处可见[*]安装mysql server 5.1RC，安装办法也很大众，不废话了[*]编译libmemcached，解压后安装即可./configure; make; make install[*]编译Memcached Functions for MySQL，在http://download.tangent.org/找一个最新的版本下载就是，./configure --with-mysql=/usr/local/mysql/bin/mysql_config --libdir=/usr/local/mysql/lib/mysql/
make
make install[*]接下来有两个办法让Memcached Functions for MySQL在mysql中生效[*]在mysql的shell中执行memcached_functions_mysql源码目录下的sql/install_functions.sql，这会把memcache function作为UDF加入mysql[*]运行memcached_functions_mysql源码目录下的utils/install.pl，这是一个perl脚本，作用同上一条
测试memcache function
以下测试脚本摘自memcached_functions_mysql的源码目录，有兴趣可以试试
CODE:
drop table if exists urls;
create table urls (
id int(3) not null,
url varchar(64) not null default '',
primary key (id)
);
select memc_servers_set('localhost:11211');
select memc_set('urls:sequence', 0);
DELIMITER |
DROP TRIGGER IF EXISTS url_mem_insert;
CREATE TRIGGER url_mem_insert
BEFORE INSERT ON urls
FOR EACH ROW BEGIN
SET NEW.id= memc_increment('urls:sequence');
SET @mm= memc_set(concat('urls:',NEW.id), NEW.url);
END |
DELIMITER ;
insert into urls (url) values ('http://google.com');
insert into urls (url) values ('http://www.ooso.net/index.php');
insert into urls (url) values ('http://www.ooso.net/');
insert into urls (url) values ('http://slashdot.org');
insert into urls (url) values ('http://mysql.com');
select * from urls;
select memc_get('urls:1');
select memc_get('urls:2');
select memc_get('urls:3');
select memc_get('urls:4');
select memc_get('urls:5');
作者: Volcano 发表于July 9, 2008 at 2:41 pm
版权信息: 可以任意转载, 转载时请务必以超链接形式标明文章原始出处和作者信息及此声明
永久链接 - http://www.ooso.net/index.php/archives/436
页:
[1]