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Mongoid and the MongoDB Aggregation Framework – Josh Software

Mongoid and the MongoDB Aggregation Framework – Josh Software MongoDB introduced the aggregation framework since Version 2.2 but the power of the aggregation framework has only been tapped in Mongoid only since 3.1.0. Even today in the latest version (currently v4.0.0), the aggregation framework is used only for some basic functionality – :sum, :count, :avg, …

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