西部数码负载均衡解决方案
 提高业务可用性 一般我们通过部署多台主机提高服务的可用性，云主机配合SLB一起使用，无需任何程序修改，即可方便的实现高可用方案。SLB通过检测后端服务的健康程度，自动隔离异常的实例，迅速实现故障切换；当该实例恢复正常的时候，又会自动恢复负载。
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WordPress数据库查询SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM wp_posts WHERE post_type = 'post' AND post_status = 'publish' GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date DESC 时发生Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'jingjing.wp_posts.post_date' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by错误，这是由require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), include('/themes/green-hope/archive.php'), get_sidebar, locate_template, load_template, require_once('/themes/green-hope/sidebar.php'), dynamic_sidebar, call_user_func_array, WP_Widget->display_callback, WP_Widget_Archives->widget, wp_get_archives查询的。
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