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robots使用技巧

以下是一些使用robots.txt文件的技巧和最好的做法： 1. 不要放弃robots.txt - 一些网站管理员没有robots.txt文件，因为他们认为这是保护网站的安全措施，但事实上它可能会影响搜索引擎爬取。 2. 维护一个更新的robots.txt文件 - 确保您的robots.txt文件不是过时的。如果您从网站上删除了某些页面或文件夹，请务必更新文件以反映更改。 3. 不要使用robots.txt来隐藏私人或敏感信息 - robots.txt文件不应该用于隐藏个人信息，如登录页面或敏感数据。如果您希望它们得到安全保护，最好使用其他安全措施。 4. 逐个声明规则 - 避免声明一大堆规则，而是按需要分开声明，以便搜索引擎更好地理解您的规则。 5. 警惕错误 - 如果您不熟悉robots.txt文件的语法或规则，最好使用在线工具来帮助您检测和修复可能的错误。 6. 不要使用禁用所有规则 - 避免声明禁用所有页面和机器人的规则。这些规则会阻止搜索引擎爬取您的网站，从而影响您的搜索引擎排名。 7. 深度限制 - 使用“深度”选项声明可以访问的文件夹层数，以帮助搜索引擎减少遍历您的网站的时间。 8. 关注机器人 - 使用“User-agent”选项指定要检查的机器人类型，并在需要时声明特定的规则。

Public @ 2023-05-28 16:00:31

浅谈404问题

今天为什么要说一下404问题呢,最近看case过程中发现个很有意思的网站，该网站被灌了大量的垃圾信息，被其发现后及时地进行了删除，这一点是值得肯定的。通常情况下，正常网站将自动返回404状态码，搜索引擎进行更新并删除，避免对网站用户及搜索引擎带来负面影响。但问题来了，该网站只删除了内容，没有任何主体内容的页面被保存了下来，未做404处理。当然，存在一类网站只删除内容后返回正常200状态码，提醒一句

Public @ 2014-09-24 16:09:54

301重定向怎么进行URL标准化设置？

经常会碰到这样的情况，其他网站链接你的站点时，会用下面的链接：www.example.comexample.com/www.example.com/index.htmlexample.com/index.php而这样导致：你站点主域名的PR值分散到其他几个URL上。如果你用301重定向把其他三个URL转到www.example.comPR也就集中在主域名：www.example.com 了。301

Public @ 2017-10-08 16:11:15

如何使用Robots避免蜘蛛黑洞？

蜘蛛黑洞：蜘蛛黑洞指的是网站通过极低的成本运营，制造出大量和内容相识但参数不同的动态URL ，像一个无限循环的“黑洞”将蜘蛛困住，蜘蛛花费太多的时间在网站，浪费了大量资源抓取的网页为无效网页。如果你的网站存在蜘蛛黑洞现象，尽快的处理好，蜘蛛黑洞不利于网站的收录，也会影响搜索引擎对网站的评分。如何使用Robots避免蜘蛛黑洞？如何利用Robots避免蜘蛛黑洞操作：普通的筛选结果页基本都是使用静态链接

Public @ 2014-02-24 16:09:26

robots

Robots are machines that are capable of carrying out complex tasks automatically, often in a manner similar to human beings. They can be programmed to perform a wide range of actions, from simple acti

Public @ 2023-03-29 04:50:11

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.027618s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.019408s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.018728s ]
[ 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:0.019654s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.018553s ]
[ 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:0.019416s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8100 LIMIT 1 [ RunTime:0.018503s ]
[ 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:0.018796s ]
[ 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:0.019312s ]
[ 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:0.019854s ]
[ 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` = 8100 LIMIT 1 [ RunTime:0.018417s ]
[ 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=8100 [ RunTime:0.022432s ]
[ 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:0.023874s ]
[ 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:0.039945s ]
[ 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Robots' AND `status` <> -1 LIMIT 1 [ RunTime:0.025301s ]
[ 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Robots' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.035173s ]
[ 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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