用贪婪算法寻找交换机的最佳匹配端口，效率比较高，时延抖动也比较小-Greedy algorithm used to find the best matching switch port, the efficiency is relatively high, delay jitter is also relatively small
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001426s ]
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:0.156154s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.011540s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002206s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.008125s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006806s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001505s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.009978s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015663s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001316s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 302274 [ RunTime:0.014075s ]
