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链接深度是什么

链接深度是指从某一页面开始往下浏览的页面层数。例如，从网站的首页，点进一个链接，从该链接进入了网站的第二层，此时的链接深度为2。链接深度有利于更好地理解网站的结构，也有助于搜索引擎优化等。

Public @ 2023-02-25 06:36:11

robots文件中屏蔽的为什么还可以收录？

robots.txt 是一个标准，它通过提供一些规则，告诉搜索引擎爬虫哪些网页可以被爬取，哪些网页不应该被爬取。但是，一些搜索引擎爬虫可能会忽略这些规则，直接抓取它们想要的网页。此外， robots.txt 文件的存在只是一个建议而不是命令。在一些情况下，搜索引擎爬虫可能会收录被 robots.txt 文件所屏蔽的网页，这有可能是因为发布这个网页的人想要让它被收录，也有可能是因为机器人误解了

Public @ 2023-04-24 07:50:07

Robots.txt 文件应放在哪里？

Robots.txt文件应放在网站的根目录下。

Public @ 2023-06-23 19:50:03

链接深度是什么

链接深度是指从某一页面开始往下浏览的页面层数。例如，从网站的首页，点进一个链接，从该链接进入了网站的第二层，此时的链接深度为2。链接深度有利于更好地理解网站的结构，也有助于搜索引擎优化等。

Public @ 2023-02-25 06:36:11

链接深度的具体作用

增加内页权重虽然，链接深度是网站的内部页面之间的链接，但如果这种内部链接达到一定的数量而且这一数量更是有质量的时候，那么网站内部页面的权重将会有极大的提升，随之而来的也是内部页面在搜索引擎搜索结果中排名的提升。有的时候我们可能会发现，某一网站内部页面在某一特定关键词下，在搜索引擎中排名会比首页要高得多，有可能就是这一页面的链接深度有“量”又有“质”造成的。增加首页权重由于网站的权重、PR值具有传递

Public @ 2016-06-12 16:11:34

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[ DB ] CONNECT:[ UseTime:0.022590s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016853s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 5803 LIMIT 1 [ RunTime:0.015284s ]
[ 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:0.015631s ]
[ 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:0.015684s ]
[ 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:0.016357s ]
[ 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` = 5803 LIMIT 1 [ RunTime:0.015620s ]
[ 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=5803 [ RunTime:0.016018s ]
[ 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:0.022400s ]
[ 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:0.038291s ]
[ 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` = '威海链接深度' AND `status` <> -1 LIMIT 1 [ RunTime:0.022586s ]
[ 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` = '威海链接深度' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.031997s ]
[ 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', ) ]

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