ttl是什么意思啊

页面:/news/view-3274101/ | 耗时:0.5371 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=3274101 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3274101 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3274101 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1066415,1115811,401352,1120416,1109182,365666,386449,2661278,1098681,382760,1093222,403873,1119542,365250,1112554,1097809,1153568,1102951,3516838,1102306,2046607,415788,371501,406421,361919,443823,1107216,400028,406695,446661) ORDER BY field (ArticleID,1066415,1115811,401352,1120416,1109182,365666,386449,2661278,1098681,382760,1093222,403873,1119542,365250,1112554,1097809,1153568,1102951,3516838,1102306,2046607,415788,371501,406421,361919,443823,1107216,400028,406695,446661)