watchdog,中文名称叫做“看门狗”，全称watchdog timer,从字面上我们可以知道其实它属于一种定时器。-watchdog, the Chinese name called watchdog , the full name of watchdog timer, literally a matter of fact we can know that it belongs to a timer.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001498s ]
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:0.359204s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001470s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002052s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001423s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005765s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.018803s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.008569s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.022835s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.030921s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 176689 [ RunTime:0.032284s ]
