Collections of articles, although constantly being added to, should also be indexed.
文章集合，经管经常添加，也需要索引。
Mongo collections, much like relational database tables, need to be properly indexed to ensure reasonable query performance.
Mongo集合(非常像关系数据库表)需要正确进行索引以便确保合理的查询性能。
Mongo collections, much like relational database tables, need to be properly indexed to ensure reasonable query performance.
Mongo集合(非常像关系数据库表)需要正确进行索引以便确保合理的查询性能。
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