title: Mongodb map reduce tutorial
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/6333164/how-do-i-use-map-reduce-in-mongodb">How do I use Map/Reduce in MongoDB?</a>  </p>
  </blockquote>
  
  
  
  <p>I have seen the <a href="http://www.10gen.com/presentations/mongosv-2011/mongodbs-new-aggregation-framework" rel="nofollow noreferrer">MongoDb presentation</a> for the new aggregation framework.
  There is a presentation, progressive examples etc...</p>
  
  <p>Do you know something similar for map/reduce under MongoDB ?</p>
  
  <p>I haven't found yet...</p>