单例设计模式具备哪些特点

页面:/news/view-1996400/ | 耗时:0.2889 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=1996400 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1996400 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1996400 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1091229,1129083,1617412,1558583,1121164,1640985,1513751,1046866,1966662,236147,1935499,521260,2308381,2187265,2264135,817586,1994392,112876,218248,1854323,1083170,1499417,977420,1102957,1130314,981687,1488097,111878,2004003,1420064) ORDER BY field (ArticleID,1091229,1129083,1617412,1558583,1121164,1640985,1513751,1046866,1966662,236147,1935499,521260,2308381,2187265,2264135,817586,1994392,112876,218248,1854323,1083170,1499417,977420,1102957,1130314,981687,1488097,111878,2004003,1420064)