新闻数据达到14万，数据库开始卡

点击链接后 IO磁盘高

SET timestamp=1644483567;

select m.* from sea_news m  where m.n_recycled=0 and m.tid in (82,83,84,85,86,87,88,89,90,91,92)  order by n_addtime desc LIMIT 0,6;

# Time: 220210 16:59:36

# User@Host: xxxxxxxxxx @ localhost [127.0.0.1]

# Query_time: 14.260497  Lock_time: 0.000507 Rows_sent: 6  Rows_examined: 170227

SET timestamp=1644483576;

select m.* from sea_news m  where m.n_recycled=0 and m.tid='55'  order by rand() desc LIMIT 0,6;