几个适合初学者学习多线程的程序，代码简单易懂，可以在jbuilder上直接应用，学习多线程的人拿走看看吧-Several suitable for beginners to learn the procedures for multi-threaded, easy-to-read code, you can directly jbuilder application, learning multi-threaded to take the people to see it
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002102s ]
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:0.095797s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001250s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002124s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001299s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004152s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001077s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003400s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015109s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001758s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 141783 [ RunTime:0.001245s ]
