介绍交换机的设计原理，以及在设计中需要注意的地方，本文主要是一个基础新的介绍。-Introduction switch design principles, as well as in the design of places that need attention, this article is primarily a foundation for a new introduction.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002033s ]
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:0.072312s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001245s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001792s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.007823s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005590s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001307s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007026s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024410s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001732s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 124807 [ RunTime:0.017693s ]
