利用系统内存建立虚拟磁盘，在一些信息比较保密的应用系统里，这种技术不可缺。-use system memory to create a virtual disk, in some comparison information confidential applications, this technology indispensable.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001580s ]
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:0.112413s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001427s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002481s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001656s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004983s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001209s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004120s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018504s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001745s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 304717 [ RunTime:0.001478s ]
