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什么是死链接？

死链接是指指向不存在或已经被删除的页面或资源的超链接。在网页中，通常用超链接将不同页面或资源相互连接起来，但如果这些链接指向的页面或资源已经不存在，点击这些链接后将无法访问到相关的信息，这就是死链接。死链接不仅会影响用户体验，还会降低网站的搜索引擎排名。

Public @ 2023-04-27 16:50:10

robots.txt文件的格式

"robots.txt"文件包含一条或更多的记录，这些记录通过空行分开(以CR,CR/NL, or NL作为结束符)，每一条记录的格式如下所示:"<field>:<optionalspace><value><optionalspace>"。在该文件中可以使用#进行注解，具体使用方法和UNIX中的惯例一样。该文件

Public @ 2014-06-28 16:09:17

为什么要进行URL静态化？

1、更好的迎合搜索引擎工作原理的爬行抓取机制；2、把网站URL静态化更有助于网站获得好的排名；3、URL静态化有利于用户体验、不容易出错4、可以提高网站访速度、完全性、稳定性

Public @ 2015-03-14 16:11:08

死链工具

威海seo技术提升威海死链
1288

太多了，比如DeadLinkChecker、Xenu 的链结可视化工具、Dr. Link Check（商业工具）等等。

Public @ 2023-02-24 20:00:06

【开发者必看】死链介绍及设置方法

威海seo技术提升威海死链
1219

一、死链介绍什么是死链几乎所有的智能小程序或站点都会遇到内容失效、过期，页面不需要再展现的情况，这些无法对用户提供任何有价值信息的页面就是死链接，它包括协议死链和内容死链两种形式。为什么要及时处理死链当站点/小程序死链数据累积过多并且被展示到搜索结果页时，会影响百度搜索对站点/小程序的评价，对站点/小程序的访问体验和用户转化都会起到负面影响。另一方面，百度检查死链的流程也会为站点/小程序带来额外负

Public @ 2011-04-24 15:36:56

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.024437s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017537s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 7842 LIMIT 1 [ RunTime:0.016581s ]
[ 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:0.016727s ]
[ 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:0.016944s ]
[ 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:0.017077s ]
[ 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` = 7842 LIMIT 1 [ RunTime:0.016417s ]
[ 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=7842 [ RunTime:0.019954s ]
[ 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:0.023477s ]
[ 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` = '威海网站结构优化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.036265s ]
[ 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` = '威海死链' AND `status` <> -1 LIMIT 1 [ RunTime:0.026531s ]
[ 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` = '威海死链' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.033529s ]
[ 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', ) ]

0.465436s

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