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robots文件之前屏蔽了蜘蛛，现已开放，如何更新快照

威海seo专题威海Robots
1747

一些域名之前通过robots.txt文件屏蔽了蜘蛛，

后来对搜索引擎开放了，但搜索结果里，还是显示以下内容:

“由于该网站的robots.txt文件存在限制指令（限制搜索引擎抓取），系统无法提供该页面的内容描述。”

解决办法：

在百度上搜索该域名，在搜索结果页面的末尾，点击用户反馈。

来源：搜外网

Public @ 2011-07-02 16:09:24

外链对于网站权重的意义

威海seo专题威海网站权重
2060

曾经流传SEO行业的一句话大家一定还记忆犹新，“内容为王，外链为皇”。这句话影响力这么大，以至于直到现在老一辈SEO从业者还是对外链趋之若鹜，孜孜以求。2015-2017年间百度连续出台多个算法，从算法层面评估链接的相关性、真实性、和推荐价值，惩罚外链群发和低质量导入链接。从此正式宣告“泛外链已死，友情链接永生”。1、泛外链已死我给一类外链冠以“泛外链”的名号是为了与友情链接等优质外链区别开来。曾

Public @ 2021-02-20 15:35:16

不同的人会看到不同的搜索结果

相信不少站长尤其是做英文网站的人都有这种经验：你在自己办公室或家里看到自己优化的网站排名排到了第一，但告诉客户后，客户却看不到同样的效果。搜索的是完全一样的关键词，用的是同一个搜索引擎，但不同的人看到的搜索引擎排名却不一样。这是一个很常见的现象，Gallon Wang就注意到”搜索引擎优化培训“这个关键词在Google的排名他看到的和我看的就不一样。造成这个现象的原因有几种。不同数据中心由于搜索引

Public @ 2018-09-20 16:14:10

robots 禁止快照

要防止所有搜索引擎显示您网站的快照，请将此元标记置入网页的 <HEAD> 部分：<meta name="robots" content="noarchive">要允许其他搜索引擎显示快照，但仅防止搜索引擎显示，请使用以下标记：<meta name="Baiduspider" content="noa

Public @ 2018-10-07 16:09:29

robots.txt语法教程

用几个最常见的情况，直接举例说明:1. 允许所有SE收录本站:robots.txt为空就可以，什么都不要写。2. 禁止所有SE收录网站的某些目录:User-agent: *Disallow: /目录名1/Disallow: /目录名2/Disallow: /目录名3/3. 禁止某个SE收录本站，例如禁止百度:User-agent: BaiduspiderDisallow: /4. 禁止所有SE收录

Public @ 2017-12-16 16:09:16

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:0.021535s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.015312s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4435 LIMIT 1 [ RunTime:0.014534s ]
[ 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:0.014872s ]
[ 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:0.015102s ]
[ 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:0.015156s ]
[ 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` = 4435 LIMIT 1 [ RunTime:0.014570s ]
[ 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=4435 [ RunTime:0.022747s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海seo专题' AND `status` <> -1 LIMIT 1 [ RunTime:0.021293s ]
[ 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seo专题' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.044121s ]
[ 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Robots' AND `status` <> -1 LIMIT 1 [ RunTime:0.020837s ]
[ 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Robots' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.031643s ]
[ 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', ) ]

0.441538s

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