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什么是死链接？

死链接是指在网页中，链接到其他网页或文件的链接，但是该链接已经失效或无法正常访问，点击该链接无法打开目标网页或文件。也被称为“坏连接”、“失效链接”、“404错误”。

Public @ 2023-04-06 12:00:06

关于URL组成部分的指南

原文地址：Talk like a Googler: parts of a url作者：Matt Cutts Google反垃圾网站组的带头人让我们来解剖一个 URL 的所有部分。我将告诉你，在 Google 通常所涉及的分别指 URl 的哪些不同部分。这是一个有效的 URL，并包含很多元素：http://video.google.co.uk:80/videoplay?do

Public @ 2021-08-06 16:11:12

如何解决网址规范化问题

解决网址规范化问题有以下几点方法：1.确保使用的CMS系统只产生规范化网址，无论是否有静态化。2.在Google管理员工具中设置首选域。3.所有内部链接保持统一，都指向规范化网址。4.使用canonical标签。5.使用301转向，把不规范化URL全部转向到规范化URL。6.提交给搜索引擎的XML网站地图中全部使用规范化网址。来源：搜外网

Public @ 2010-02-20 16:11:22

什么是死链

死链指的是网页上的一个超链接或者图片链接，点击后无法打开或者显示出错的链接。通常是由于链接的网页或者图片已被删除、更改了网址或者因为链接错误等原因导致的。死链的存在会影响用户访问体验，同时对搜索引擎优化也会产生一定影响。

Public @ 2023-06-08 16:00:06

死链出现的三种情况

1. 网页已不存在：指之前链接的页面已经被删除或者迁移，无法访问到原本链接的内容。 2. 链接写错：当链接地址不正确时，例如URL出现了拼写错误或者参数不对、少了字符等，就无法正常跳转至目标页面。 3. 目标页面已经不存在：指之前链接的页面还存在，但目标页面内部的某些内容已经被删除或者迁移，导致链接失效。

Public @ 2023-04-15 07:50:08

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.023194s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016546s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 6867 LIMIT 1 [ RunTime:0.015767s ]
[ 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:0.015947s ]
[ 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:0.016225s ]
[ 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:0.016519s ]
[ 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` = 6867 LIMIT 1 [ RunTime:0.015497s ]
[ 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=6867 [ RunTime:0.017975s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站结构优化' AND `status` <> -1 LIMIT 1 [ RunTime:0.023086s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站结构优化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.037129s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海死链' AND `status` <> -1 LIMIT 1 [ RunTime:0.022666s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海死链' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.034772s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

0.454831s

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