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什么是错误链接？

根本不存在的链接，就是错误链接。

错误链接与死链接的区别：

错误链接是由于用户的疏忽，请求的链接不存在。

死链接是原来访问正常，后来因为网站的变故而不能访问。

发生错误链接的情况：

用户对域名拼写错误。

URL地址书写错误。

URL后缀多余了或缺少了斜杆。

URL地址中出现的字母大小写不完全匹配。

来源：搜外网

Public @ 2018-05-24 16:21:34

我设置了301跳转，多久可以生效？

我设置了301跳转，多久可以生效？答：目前百度无法承诺301跳转的生效时间，因为站长感受到的生效时间会受多因素影响，比如Baiduspider再次抓取这个页面发现其设置了301的时间、网页的重要程度以及自身质量等。来源：百度搜索资源平台百度搜索学堂

Public @ 2019-11-23 16:09:07

什么是meta robots 标签？meta robots 标签的写法

Meta robots标签是一种HTML头部元数据标签，用于指示搜索引擎如何处理指定页面的内容。它告诉网络爬虫如何爬取索引优化。这些标签是在和之间添加的，旨在为“robots（搜索引擎蜘蛛）”提供有关如何索引和缓存页面内容的指令。以下是meta robots标签的写法： - - - - 其中，“content”属性指定一组用逗号分隔的值，可以是以下之一： - index：告诉爬

Public @ 2023-04-05 21:50:30

什么是错误链接？

根本不存在的链接，就是错误链接。错误链接与死链接的区别：错误链接是由于用户的疏忽，请求的链接不存在。死链接是原来访问正常，后来因为网站的变故而不能访问。发生错误链接的情况：用户对域名拼写错误。URL地址书写错误。URL后缀多余了或缺少了斜杆。URL地址中出现的字母大小写不完全匹配。来源：搜外网

Public @ 2018-05-24 16:21:34

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.031736s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.022543s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.021393s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.022403s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.021410s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.022543s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 5300 LIMIT 1 [ RunTime:0.021437s ]
[ 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:0.021659s ]
[ 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:0.022079s ]
[ 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:0.022439s ]
[ 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` = 5300 LIMIT 1 [ RunTime:0.021440s ]
[ 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=5300 [ RunTime:0.024722s ]
[ 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:0.028780s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, '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:0.042552s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海错误链接' AND `status` <> -1 LIMIT 1 [ RunTime:0.028448s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海错误链接' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.040609s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9541, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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