可以帮助建立网站的搜索目录，能够高速建立目标URL数据库，提取超过70亿网页、目录及搜索引擎中的metadata（标题，关键字，描述）信息，并和用户的关键词作匹配
-can help establish a web site"s search directory, a high-speed target URL database, Extraction of more than 7 billion web pages, directory and search engine of metadata (title, keyword, Description) information, and user and keywords for matching
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001324s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.089259s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001181s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001956s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001165s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003689s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001046s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003389s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015034s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001335s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 140917 [ RunTime:0.001298s ]
