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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

免费SSL证书如何做域名验证

威海网站建设威海SSL
2599

免费SSL证书域名验证有2种验证方式，今天就来给大家讲一下，最常用的网站验证：如下图所示，假设我们绑定的域名为：www.zzidc.com(www.zzidc.com和zzidc.com默认是一个域名,所以下方的验证都是双份哦,二级域名验证也需要主域名可以访问的)，按照图中要求进行操作：1.png第一步：下载验证文件“点击下载压缩包”，将解压后的文件放置www.zzidc.com网站跟目录5.pn

Public @ 2014-04-14 15:36:30

常用公共DNS服务器地址

威海网站建设威海dns
1841

1) Google DNS： - 8.8.8.8 - 8.8.4.4 2) CloudFlare DNS： - 1.1.1.1 - 1.0.0.1 3) Quad9 DNS： - 9.9.9.9 - 149.112.112.112

Public @ 2023-03-01 12:48:06

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

JavaScript如何影响网站加载速度

当考虑到移动网站排名的时候，我们通常第一个想到的因素就是网站的加载速度。而加快网站加载速度的方式，通常第一个想到的都是从图片的大小入手，这确实非常有效，但是我们经常忽略的影响一个网站加载速度的因素就是JavaScript,这个几乎出现于每个页面代码中的语言。在网站的代码中，HTML(超文本标记语言)控制网页的结构和内容;CSS(层叠样式表)控制站点在不同设备上的外观和展现形式;JavaScript

Public @ 2009-02-09 15:37:09

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.023221s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016814s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1331 LIMIT 1 [ RunTime:0.015683s ]
[ 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:0.015999s ]
[ 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:0.016231s ]
[ 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:0.016543s ]
[ 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:0.015554s ]
[ 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+1 where id=1331 [ RunTime:0.019597s ]
[ 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:0.022336s ]
[ 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:0.038981s ]
[ 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:0.022327s ]
[ 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:0.031153s ]
[ 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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