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:0.001207s ]
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:0.082883s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001145s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001137s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001060s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003106s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000921s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003730s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016255s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001253s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 304717 [ RunTime:0.015017s ]
