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Alexa排名的困惑

大概因為最近做了這個中文博客，這幾個月收到比較多的中文垃圾郵件。其中經(jīng)常讓我困惑的是推銷所謂Alexa排名服務(wù)。去Google搜索了一下，提供這種服務(wù)的還真不少，有的號稱能把網(wǎng)站做進(jìn)Alexa排名前一百名，有的說前一萬名，再靠后的還不做了。Alexa排名是根據(jù)裝了Alexa工具條的電腦訪問某網(wǎng)站的次數(shù)所得出來的網(wǎng)站流量排名。這些Alexa排名服務(wù)所提供的基本上都是通過作弊手段使你網(wǎng)站Alexa排名

Public @ 2011-07-07 16:14:07

alexa排名

Alexa是一家專門發(fā)布網(wǎng)站世界排名的網(wǎng)站。以查找引擎發(fā)家的Alexa創(chuàng)建于1996年4月(美國)，意圖是讓互聯(lián)網(wǎng)網(wǎng)友在共享虛擬世界資源的一起，更多地參加互聯(lián)網(wǎng)資源的安排。Alexa每天在網(wǎng)上收集超越1,000GB的信息，不只給出多達(dá)幾十億的網(wǎng)址鏈接，而且為其間的每一個網(wǎng)站進(jìn)行了排名。可以說，Alexa是當(dāng)前具有URL數(shù)量最龐大，排名信息發(fā)布最翔實的網(wǎng)站。

Public @ 2010-02-24 15:51:38

基本文件流程錯誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.022484s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016768s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海alexa排名' AND `status` <> -1 LIMIT 1 [ RunTime:0.026015s ]
[ 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alexa排名' AND `status` <> -1 ORDER BY create_time desc LIMIT 0,10 [ RunTime:0.023515s ]
[ 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:0.015587s ]
[ 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:0.015727s ]
[ 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:0.016258s ]
[ 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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Alexa排名的困惑

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