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Canonical标签与301的区别

Canonical标签与301的区别】

1，在几个网页内容完全相同（或高度相似）的时候，如果希望两个网页都可以被用户正常访问到，就使用Canonical标签；如果仅让用户访问其中的一个，直接使用301跳转更方便。

来源：百度搜索资源平台百度搜索学堂

Public @ 2017-12-08 16:11:16

什么是移动Sitemap协议,如何提交移动Sitemap协议

百度推出了移动Sitemap协议，用于将网址提交给移动搜索收录。百度移动Sitemap协议是在标准Sitemap协议基础上制定的，增加了<mobile:mobile/>标签，它有四种取值：<mobile:mobile/> ：移动网页<mobile:mobile type="mobile"/> ：移动网页<mobile:mobile ty

Public @ 2014-08-22 16:09:43

关于robots.txt的二三事

【Robots简介】robots.txt是一个协议，是搜索引擎访问网站时第一个要查看的文件，它存在的目的是告诉搜索引擎哪些页面能被抓取，哪些页面不能被抓取。当spider访问一个站点时，会首先检查该站点根目录下是否存在robots.txt，如果存在，spider会按照文件中的内容来确定访问的范围；如果该文件不存在，所有的spider将能够访问网站上所有没有被口令保护的页面。【具体介绍】1、User

Public @ 2017-02-13 16:09:19

通过Canonical标签解决重复内容收录

Canonical标签是指在网页的HTML代码中添加一个链接指向该页面的主要版本，当页面有多个URL时，通过Canonical标签告诉搜索引擎哪个是主要版本，从而避免重复内容被收录。例如，在网站中有一篇文章，URL分别是： http://www.example.com/article http://www.example.com/articles/123 http://www.examp

Public @ 2023-06-05 19:00:10

如何设置canonical标签

canonical标签应该放置于页面的head里，代码示例如下：

Public @ 2023-02-25 03:36:05

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.026254s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.018725s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4544 LIMIT 1 [ RunTime:0.017796s ]
[ 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:0.018078s ]
[ 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:0.018169s ]
[ 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:0.018301s ]
[ 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` = 4544 LIMIT 1 [ RunTime:0.017760s ]
[ 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=4544 [ RunTime:0.020925s ]
[ 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:0.027954s ]
[ 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:0.039365s ]
[ 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canonical' AND `status` <> -1 LIMIT 1 [ RunTime:0.024757s ]
[ 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canonical' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.034126s ]
[ 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', ) ]

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