利用多线程实现程序保护，简单的示范程序，帮助理解多线程的是运行机制-Realize the use of multi-threaded process protections, the simple model procedures to help understand multi-threading is the operating mechanism
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001299s ]
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:0.092589s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001223s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001214s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003564s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001101s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001248s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 163932 [ RunTime:0.001229s ]
