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什么是首选域设置

首选域设置是指在网络或系统中指定首选的域名服务器。当计算机需要解析一个域名时，它会先询问首选域名服务器，如果该服务器无法解析，则会继续询问其它域名服务器。首选域名服务器的选择可以影响网络或系统的性能和可靠性。

Public @ 2023-06-04 02:00:06

360搜索对Robots协议的扩展

360搜索对Robots协议进行了扩展，增加了以下几个指令： 1. User-Agent：用于指定搜索引擎访问网站时使用的用户代理字符串，可以设置多个User-Agent。 2. Crawl-delay：用于指定搜索引擎访问网站时的延迟时间，单位为秒。可以设置针对不同的User-Agent的延迟时间。 3. Sitemap：用于指定网站的sitemap文件的地址，搜索引擎将通过该文件获取站点

Public @ 2023-05-29 17:00:21

robots禁止抓取图片

User-agent: *Disallow: .jpg$jpg可以代替为gif，png 等等...来源：360站长平台

Public @ 2023-01-15 16:09:02

什么是首选域设置

网站在做优化的时候有一个专业术语叫首选域，这个专业术语在很多SEO培训机构或者SEO行业前辈经验分享中都有提到过。那究竟什么是首选域的作用，网站如何设置首选域　　什么是首选域呢?　　网站的首选域类似于标准化URL，是搜索引擎索引中编制网页的域。在搜索引擎搜索结果中，指向网站的链接有www和非www网址格式。而所谓的首选域是我们希望网站在搜索结果中显示的格式。　　一般情况下，搜索引擎认为域名带www

Public @ 2021-09-10 16:21:37

什么是首选域设置

首选域设置是指在网络或系统中指定首选的域名服务器。当计算机需要解析一个域名时，它会先询问首选域名服务器，如果该服务器无法解析，则会继续询问其它域名服务器。首选域名服务器的选择可以影响网络或系统的性能和可靠性。

Public @ 2023-06-04 02:00:06

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[ DB ] CONNECT:[ UseTime:0.026764s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.019058s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 8406 LIMIT 1 [ RunTime:0.018140s ]
[ 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:0.018442s ]
[ 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:0.018581s ]
[ 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:0.018787s ]
[ 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` = 8406 LIMIT 1 [ RunTime:0.017979s ]
[ 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=8406 [ RunTime:0.020868s ]
[ 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:0.025493s ]
[ 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:0.042107s ]
[ 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` = '威海首选域' AND `status` <> -1 LIMIT 1 [ RunTime:0.028277s ]
[ 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` = '威海首选域' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.036399s ]
[ 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', ) ]

0.506546s

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