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MongoDB: What is the performance difference between cursor and aggregation?

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I am new to mongodb. I am trying to do some aggregation operations like sum, avg, min.. on a collection. And I found that I can do it either using aggregation framework or cursor.forEach(). Which one to use? It will be better if someone explains how both works internally and give me some suggestions.

Thank you in advance

posted Sep 28, 2016 by anonymous

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+1 vote

I am having collection with 127706 document. In aggregation pipeline i having 2 group stages. It is giving me result in 1.5 sec.

To optimize it to more I have created index on the fields which I am using in match stages with no success. Is their any to optimize aggregation performance in more way?

I m using mongodb 3.2.1?

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