设计算法时要考虑哪几个原则

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select * from tbl_Articles WHERE ArticleID=2111663 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2111663 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2111663 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1129549,1077756,917311,1322171,1110658,696894,306899,1404857,1112722,1130556,1091031,116869,935393,1120641,1122312,665608,1280700,1067047,1361577,241944,1111796,1488097,268977,1530280,375247,1102032,691654,1041659,255984,138849) ORDER BY field (ArticleID,1129549,1077756,917311,1322171,1110658,696894,306899,1404857,1112722,1130556,1091031,116869,935393,1120641,1122312,665608,1280700,1067047,1361577,241944,1111796,1488097,268977,1530280,375247,1102032,691654,1041659,255984,138849)