简述CPU高速缓存的作用

页面:/news/view-2136708/ | 耗时:0.8250 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=2136708 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2136708 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2136708 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1071119,1054136,1083421,1084829,1124997,1099857,1044442,1067795,1078979,1105697,1109925,1087523,1095520,1063213,993285,1115295,1112702,1066828,1100527,1104951,1063429,1064449,1044609,1095578,1110658,1099819,1117405,1114128,1067915,1117988) ORDER BY field (ArticleID,1071119,1054136,1083421,1084829,1124997,1099857,1044442,1067795,1078979,1105697,1109925,1087523,1095520,1063213,993285,1115295,1112702,1066828,1100527,1104951,1063429,1064449,1044609,1095578,1110658,1099819,1117405,1114128,1067915,1117988)