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頭條搜索Bytespider基本流程

1. 抓取網(wǎng)頁

每個獨立的搜索引擎都有自己的網(wǎng)頁抓取程序爬蟲（Spider）。爬蟲順著網(wǎng)頁中的超鏈接，從這個網(wǎng)站爬到另一個網(wǎng)站，通過超鏈接分析連續(xù)訪問抓取更多網(wǎng)頁。被抓取的網(wǎng)頁被稱之為網(wǎng)頁快照。由于互聯(lián)網(wǎng)中超鏈接的應用很普遍，理論上，從一定范圍的網(wǎng)頁出發(fā)，就能搜集到絕大多數(shù)的網(wǎng)頁。

2. 處理網(wǎng)頁

搜索引擎抓到網(wǎng)頁后，還要做大量的預處理工作，才能提供檢索服務。其中，最重要的就是提取關鍵詞，建立索引庫和索引。其他還包括去除重復網(wǎng)頁、分詞（中文）、判斷網(wǎng)頁類型、分析超鏈接、計算網(wǎng)頁的重要度/豐富度等。

3. 提供檢索服務

用戶輸入關鍵詞進行檢索，搜索引擎從索引數(shù)據(jù)庫中找到匹配該關鍵詞的網(wǎng)頁；為了用戶便于判斷，除了網(wǎng)頁標題和URL外，還會提供一段來自網(wǎng)頁的摘要以及其他信息。

來源：頭條搜索站長平臺

Public @ 2022-03-13 15:38:59

搜索引擎蜘蛛抓取份額是什么？

一月份時，Google新的SEO代言人Gary Illyes在Google官方博客上發(fā)了一篇帖子：What Crawl Budget Means for Googlebot，討論了搜索引擎蜘蛛抓取份額相關問題。對大中型網(wǎng)站來說，這是個頗為重要的SEO問題，有時候會成為網(wǎng)站自然流量的瓶頸。今天的帖子總結一下Gary Illyes帖子里的以及后續(xù)跟進的很多博客、論壇帖子的主要內容，以及我自己的一些案例

Public @ 2011-06-02 16:21:52

Google搜索引擎的工作原理

PPCblog.com呈現(xiàn)給我們一幅由Jess Bachman（在WallStats.com工作）精心描繪的示意圖，這張流程圖展示了每天擁有3億次點擊量的Google搜索按鈕背后搜索引擎在那不到1秒的響應時間內所進行的處理。這張流程圖演示了在你點擊Google搜索按鈕后，在Google返回查詢結果前那一眨眼的功夫里，Google是如何處理你的搜索請求的？這可是搜索巨人Google年贏利額高達200

Public @ 2013-07-27 16:21:54

頭條搜索ip字段介紹

威海Spider 威海Bytespider
2804

頭條搜索的ip字段總共涉及10個ip，具體字段如下：110.249.201.0/24110.249.202.0/24111.225.148.0/24111.225.149.0/24220.243.135.0/24220.243.136.0/24220.243.188.0/24220.243.189.0/2460.8.123.0/2460.8.151.0/24來源：頭條搜索站長平臺

Public @ 2021-08-12 15:39:00

頭條搜索UA介紹

威海Spider 威海Bytespider
2092

頭條搜索UA（User Agent）是指頭條搜索爬蟲在訪問并抓取網(wǎng)站數(shù)據(jù)時，所使用的瀏覽器標識。多數(shù)爬蟲在訪問網(wǎng)站時，會使用特定的瀏覽器標識，以便服務器能夠識別其為爬蟲，并為其提供特定的處理方式。頭條搜索爬蟲也不例外，其使用的UA是："Mozilla/5.0 (compatible; ToutiaoSpider/2.0; +http://toutiao.com/)"。其中，"Mozilla/5.0

Public @ 2023-06-24 16:50:08

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[ DB ] CONNECT:[ UseTime:0.023015s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016426s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 1544 LIMIT 1 [ RunTime:0.015636s ]
[ 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:0.015857s ]
[ 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:0.016383s ]
[ 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:0.016047s ]
[ 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` = 1544 LIMIT 1 [ RunTime:0.015635s ]
[ 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=1544 [ RunTime:0.016574s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海搜索引擎工作原理' AND `status` <> -1 LIMIT 1 [ RunTime:0.022998s ]
[ 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` = '威海搜索引擎工作原理' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.039881s ]
[ 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Bytespider' AND `status` <> -1 LIMIT 1 [ RunTime:0.022421s ]
[ 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Bytespider' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.031524s ]
[ 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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