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November 2010

Using Map-Reduce in a MongoDB Based Application

Recently I've been working on a couple of sites on-and-off in my spare time which both have a couple of things in common: they both use MongoDB as a data store and both incorporate the concept of tagging. Using MongoDB's map-reduce functionality is ideal for getting the list of tags, but it does come with its own set of potential issues which are well worth bearing in mind.

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