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网页快照(Cache)

威海seo术语威海网页快照
1804

查找引擎数据库中心记载的页面内容复制，查找引擎在成果中给出“网页快照”（或其他类似称号）链接后，用户点击后看到的就是查找引擎数据库中的页面内容，用户由于某种原因不能拜访原始网页时，可以检查网页快照里的内容作为参阅（依照人和依照查找引擎蜘蛛程序）以及他们所拜访的网页数量

Public @ 2017-02-06 15:34:32

robots协议

威海seo术语威海Robots
1174

　Robots协议（也称为爬虫协议、机器人协议等）的全称是“网络爬虫扫除规范”（RobotsExclusionProtocol），网站经过Robots协议通知查找引擎哪些页面可以抓取，哪些页面不能抓取　　是查找引擎的一部分来定位和索引互联网上的每个可能答复查找恳求的网页，一般只在评论robots的HTML标签或许robots.txt文件的时分运用。

Public @ 2010-10-17 15:26:25

要害词排名（ranking）

查找引擎所运用的技能来拣选匹配网页，生成查找成果页面，有些查找引擎是按日期拣选查找成果，而大部分的查找引擎是依照相关性排名，决议终究排名履行的软件代码被称为排名算法，而且它是每个查找引擎公司的中心商业秘要。

Public @ 2021-11-28 15:51:38

【官方说法】详谈百度快照前世今生

百度快照是百度搜索引擎的一个重要功能，它可以将网页在被百度抓取时的状态保存下来，并在搜索结果页面中展示。用户可以通过查看快照来了解网页内容的更新情况和变化。在过去，百度快照经常被用于反映网站的收录和排名情况。但随着搜索引擎算法的不断升级，快照的重要性已经逐渐减弱，更多的是作为一种参考资料来被使用。同时，百度也对快照做了一些改进和优化，如提升了快照的更新速度、增加了网页快照的存储空间等，以提

Public @ 2023-06-24 10:00:11

【官方说法】详谈百度快照前世今生

谈到百度快照，很多站长都很重视，快照的展示样式和内容也是站长们关注的重点；在过去一年中攻城狮们接收到很多站长的投诉反馈，主要集中在如下几个方面：1、快照的排版错乱问题，页面内容展示不全2、没有网页快照3、网页快照内容的更新问题4、网页已经死链，但快照仍然存在例如搜索『codercar.com』出来的百度快照截图，请注意红框部分的描述。这次学堂君请攻城狮来把百度快照的生成逻辑梳理下，详细给大家讲解下

Public @ 2011-09-09 15:34:25

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.026058s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.018564s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1105 LIMIT 1 [ RunTime:0.017745s ]
[ 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:0.018140s ]
[ 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:0.018116s ]
[ 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:0.018972s ]
[ 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` = 1105 LIMIT 1 [ RunTime:0.017540s ]
[ 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=1105 [ RunTime:0.019701s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海seo术语' AND `status` <> -1 LIMIT 1 [ RunTime:0.027945s ]
[ 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seo术语' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.035458s ]
[ 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` = '威海网页快照' AND `status` <> -1 LIMIT 1 [ RunTime:0.025686s ]
[ 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` = '威海网页快照' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.033620s ]
[ 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', ) ]

0.479604s

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