提供DataFlash（AT45DB041）的底层读写驱动函数，包括内存读写，缓存读写，内存与缓存之间的数据交换等等。-provide DataFlash (AT45DB041) literacy drive the bottom function, memory read and write, read and write cache, and cache memory for data exchange between and so on.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002650s ]
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:0.121274s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.019886s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.014580s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.008045s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.016458s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.014934s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.013854s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015475s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.007780s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 154037 [ RunTime:0.030777s ]
