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网站打开慢常规问题排查

如果有遇见网站访问慢，建议首先从以下几个方法检测一下，是否是服务器配置或者网络的原因

1. 检查域名解析是否正确，我司虚拟主机默认推荐做别名解析到赠送的二级域名（xxxxx.gotoipx.com）

特别注意（西部双线、多线机房）此机房是通过CDN实现的双/多线，如果是做的A纪录会造成联通和其它线路打开慢

必须做别名解析到我司赠送的二级域名上面，顶级域名不能做别名的，可以解析到Ip后做一个301跳转到www域名上面

另:我司的域名支持顶级域名做别名解析

2. ping一下您的域名，看看延迟是否正常（开始-运行-CMD回车）

blob.png

如果时间值大于100，则网络连接质量有异常，此时如果您购买的是单线主机，请核实您主机线路和您当前本地线路是

否一致，如果不一致，建议升级到多线或者双线主机，如果您当前已经是双线或者多线，请把此图提交到工单中，

方便我司技术检查处理

3. 如果非上述两个原因，则可能是服务器异常或者程序异常，具体请联系程序员或者提交工单，我司检查原因

来源：西部数码

Public @ 2020-09-20 15:37:07

Struts2漏洞预警

威海网站建设威海CMS
1500

Struts2 devMode导致远程代码执行漏洞什么是devMode？所谓的devMode模式，看名称也知道，是为Struts2开发人员调试程序准备的，在此模式下可以方便地查看日志等信息。默认情况下，devMode模式是关闭的。不过实际上仍然有很多网站上线的时候就赤裸裸地采用devMode模式，自然面临更大的安全问题，需要尽快修复。影响范围：当Struts开启devMode时，该漏洞将影响Str

Public @ 2019-03-12 15:44:42

ftp连接后只出现欢迎.txt或者列表为空

威海网站建设威海FTP
2303

ftp连接后只出现欢迎.txt或者列表为空我司虚拟主机2003系统,设置好ip地址,ftp帐号密码,点击连接后出现"欢迎.txt",而不显示主机的目录结构1.jpg原因是在设置ftp信息时,远程路径这一项填写了/ ,去掉保持为空即可1.jpg另,我司虚拟主机2008系统下,若类似设置,连接后目录也不会显示,目录列表为空!请注意ftp站点设置里面的远程路径留空不填写。来源：西部数

Public @ 2016-11-17 15:45:59

带宽下载速度之间单位换算

我们平时说的家用或者服务器带宽多少兆，其具体单位是Mbps，换算成下载传输速度并不等同于多少兆每秒，这之间有一个换算公式。信息最小的单位是bit，也称为比特位，习惯用b来表示，而数据存储的基础单位是字节，写作Byte，常用B表示，一个字节占8位（bit），下面我们来看下单位换算。1比特(bit)=1b1B=1Byte=8b(bit)KB——千字节MB——兆字节1KB=1024B=8192b1MB=

Public @ 2013-03-26 15:37:05

你的网站多快才算快

Web 性能优化专家 Steve Souders 表示优化性能向来是头疼的事情。人们期望他能给书一个“完美速度”的绝对值。很不幸的是，这个问题没有答案。不同的情况有不同的答案。他认为，你必须根据你的资源、能力以及你的用户的反馈让网站的速度维持在一个大家都舒服的水平。但是他也承认，很多 IT 专业人士是不会为这个答案买账的。假如你使用 Google Analytics 的话，你可以看到你的网站速度的

Public @ 2012-11-28 15:37:09

更多您感兴趣的搜索

基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.021199s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.015198s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1331 LIMIT 1 [ RunTime:0.014317s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.014612s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.014651s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.014939s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1331 LIMIT 1 [ RunTime:0.014261s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+2 where id=1331 [ RunTime:0.015149s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站建设' AND `status` <> -1 LIMIT 1 [ RunTime:0.021751s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站建设' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.042579s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海网站访问速度' AND `status` <> -1 LIMIT 1 [ RunTime:0.021074s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海网站访问速度' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.031936s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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