成本的内涵是什么

页面:/news/view-443759/ | 耗时:0.0216 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=443759 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=443759 LIMIT 0,1
select * from tbl_Articles_sphinx where id=443759 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(981824,1065619,1124245,1078196,1370581,1132869,1123697,1108474,1116363,1052269,1131195,1124229,1120314,1056892,1045909,1110652,1103518,1112863,1104025,1123337,1044675,1124151,1051331,1084091,1107663,1123921,1132247,1127353,1123589,1128779) ORDER BY field (ArticleID,981824,1065619,1124245,1078196,1370581,1132869,1123697,1108474,1116363,1052269,1131195,1124229,1120314,1056892,1045909,1110652,1103518,1112863,1104025,1123337,1044675,1124151,1051331,1084091,1107663,1123921,1132247,1127353,1123589,1128779)