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什么是首選域設(shè)置

首選域設(shè)置是指在網(wǎng)絡(luò)或系統(tǒng)中指定首選的域名服務(wù)器。當(dāng)計(jì)算機(jī)需要解析一個(gè)域名時(shí)，它會(huì)先詢(xún)問(wèn)首選域名服務(wù)器，如果該服務(wù)器無(wú)法解析，則會(huì)繼續(xù)詢(xún)問(wèn)其它域名服務(wù)器。首選域名服務(wù)器的選擇可以影響網(wǎng)絡(luò)或系統(tǒng)的性能和可靠性。

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

什么是首選域設(shè)置

網(wǎng)站在做優(yōu)化的時(shí)候有一個(gè)專(zhuān)業(yè)術(shù)語(yǔ)叫首選域，這個(gè)專(zhuān)業(yè)術(shù)語(yǔ)在很多SEO培訓(xùn)機(jī)構(gòu)或者SEO行業(yè)前輩經(jīng)驗(yàn)分享中都有提到過(guò)。那究竟什么是首選域的作用，網(wǎng)站如何設(shè)置首選域　　什么是首選域呢?　　網(wǎng)站的首選域類(lèi)似于標(biāo)準(zhǔn)化URL，是搜索引擎索引中編制網(wǎng)頁(yè)的域。在搜索引擎搜索結(jié)果中，指向網(wǎng)站的鏈接有www和非www網(wǎng)址格式。而所謂的首選域是我們希望網(wǎng)站在搜索結(jié)果中顯示的格式。　　一般情況下，搜索引擎認(rèn)為域名帶www

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

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[ DB ] CONNECT:[ UseTime:0.026102s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.018541s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海首選域' AND `status` <> -1 LIMIT 1 [ RunTime:0.024479s ]
[ 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` = '威海首選域' AND `status` <> -1 ORDER BY create_time desc LIMIT 0,10 [ RunTime:0.025180s ]
[ 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 filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.017868s ]
[ 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:0.018105s ]
[ 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:0.018771s ]
[ 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', ) ]

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什么是首選域設(shè)置

什么是首選域設(shè)置

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