一个简单高效的循环缓冲区的管理代码，与平台无关，可以方便在各种场合使用。-A simple and efficient management of the cycle of the buffer zone code, and platform-independent, it will be convenient to use on various occasions.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001349s ]
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:0.083647s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001063s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002020s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001323s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003406s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001711s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003995s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016305s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001149s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 147994 [ RunTime:0.024081s ]
