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seo頁(yè)面正文優(yōu)化技巧

頁(yè)面正文優(yōu)化需要從如下幾個(gè)方面進(jìn)行探討：1.詞頻和密度正文中的關(guān)鍵詞牽扯到幾個(gè)概念。一個(gè)是詞頻，也就是關(guān)鍵詞出現(xiàn)的次數(shù)。另一個(gè)是關(guān)鍵詞密度，也就是關(guān)鍵詞出現(xiàn)次數(shù)除以頁(yè)面可見(jiàn)文字總次數(shù)，或者說(shuō)關(guān)鍵詞密度是規(guī)范化后（考慮正文長(zhǎng)度后）的詞頻。很多seo人員認(rèn)為關(guān)鍵詞詞頻越高，頁(yè)面與關(guān)鍵詞越相關(guān)，但詞頻概念沒(méi)有考慮內(nèi)容長(zhǎng)度。而且現(xiàn)在搜索引擎算法已經(jīng)比簡(jiǎn)單詞頻或密度計(jì)算復(fù)雜得多，站長(zhǎng)可以很容易地人為提高詞頻

Public @ 2017-02-28 16:21:33

基本文件流程錯(cuò)誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.027044s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.019428s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海正文優(yōu)化' AND `status` <> -1 LIMIT 1 [ RunTime:0.025482s ]
[ 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` = '威海正文優(yōu)化' AND `status` <> -1 ORDER BY create_time desc LIMIT 0,10 [ RunTime:0.025524s ]
[ 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 filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.018564s ]
[ 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:0.018720s ]
[ 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:0.018807s ]
[ 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', ) ]

0.273999s

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