http://guogoul.com Fri, 29 Oct 2010 00:24:37 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 http://guogoul.com/2010/10/27/memcached-danger/ http://guogoul.com/2010/10/27/memcached-danger/#comments Wed, 27 Oct 2010 12:09:08 +0000 shanfeng http://guogoul.com/?p=264 http://guogoul.com/2010/10/27/memcached-danger/feed/ 1 http://guogoul.com/2010/01/05/apc_problems/ http://guogoul.com/2010/01/05/apc_problems/#comments Tue, 05 Jan 2010 04:24:24 +0000 shanfeng http://guogoul.com/?p=235 http://guogoul.com/2010/01/05/apc_problems/feed/ 1 http://guogoul.com/2009/07/13/logs-slave-updates/ http://guogoul.com/2009/07/13/logs-slave-updates/#comments Mon, 13 Jul 2009 14:06:07 +0000 shanfeng http://guogoul.com/?p=184 B -> C 也就是说，A为从服务器B的主服务器，B为从服务器C的主服务器。为了能工作，B必须既为主服务器又为从服务器。你必须用--logs-bin启动A和B以启用二进制日志，并且用--logs-slave-updates选项启动B。 以上是摘自mysql对于logs-slave-updates启动选项的描述。 当然logs-slave-upates也可以写入my.cnf : ////////////////// log_slave_updates=1 ////////////////// 当然在这种机制下可能有的同学会存在这么个问题： 如果a->b b->a 这样的双master架构下，a,b都打开log_slave_updates选项会不会出现无限循环的状态。 mysql已经考滤到了这个问题，每条bin-log都会记录执行语句的源server_id.当slave读到语句的server_id等于本身的ID的时候，不会忽略执行，所以我们不用担心a,b会不会无限循环下去。 基于以上这种情况，mysql的replication集群将更加灵活，你如果需要可以做成各种各样的链式复制。比如 a->b b->a b中设置log_slave_updates后还可以b->c. 这样a,c中的数据也是一致的。 测试部分my.cnf 26 [mysqld2] 27 pid-file = /home/shanfeng/mysql/data2/mysqld2.pid 28 socket = /home/shanfeng/mysql/data2/mysqld2.sock [...]]]> http://guogoul.com/2009/07/13/logs-slave-updates/feed/ 1 http://guogoul.com/2009/06/23/tcp_tw_reuse/ http://guogoul.com/2009/06/23/tcp_tw_reuse/#comments Tue, 23 Jun 2009 15:46:43 +0000 john http://john.renren.in/?p=116 http://guogoul.com/2009/06/23/tcp_tw_reuse/feed/ 2 http://guogoul.com/2009/06/14/ngx_http_gzip_static_module/ http://guogoul.com/2009/06/14/ngx_http_gzip_static_module/#comments Sun, 14 Jun 2009 12:29:27 +0000 john http://john.renren.in/?p=123 http://guogoul.com/2009/06/14/ngx_http_gzip_static_module/feed/ 0 http://guogoul.com/2008/11/13/imagick-php/ http://guogoul.com/2008/11/13/imagick-php/#comments Thu, 13 Nov 2008 10:42:01 +0000 john http://www.guogoul.com/2008/11/13/imagick-php%e6%89%a9%e5%b1%95%e7%9a%84%e5%ae%89%e8%a3%85-ubuntu%e7%89%88/ http://guogoul.com/2008/11/13/imagick-php/feed/ 4 http://guogoul.com/2008/11/01/sys_web_extend/ http://guogoul.com/2008/11/01/sys_web_extend/#comments Sat, 01 Nov 2008 06:27:02 +0000 john http://www.guogoul.com/2008/11/01/sys_web_extend/ http://guogoul.com/2008/11/01/sys_web_extend/feed/ 0 http://guogoul.com/2008/10/21/web_data/ http://guogoul.com/2008/10/21/web_data/#comments Tue, 21 Oct 2008 15:27:48 +0000 john http://www.guogoul.com/2008/10/21/web_data/ http://guogoul.com/2008/10/21/web_data/feed/ 3 http://guogoul.com/2008/08/18/basic-authorized/ http://guogoul.com/2008/08/18/basic-authorized/#comments Mon, 18 Aug 2008 00:25:20 +0000 john http://www.guogoul.com/2008/08/18/%e7%ae%80%e5%8d%95basic%e9%aa%8c%e8%af%81/ http://guogoul.com/2008/08/18/basic-authorized/feed/ 0 http://guogoul.com/2008/08/03/smarty_1/ http://guogoul.com/2008/08/03/smarty_1/#comments Sun, 03 Aug 2008 13:59:34 +0000 john http://www.guogoul.com/2008/08/03/smarty_1/ http://guogoul.com/2008/08/03/smarty_1/feed/ 3