title: fastest way to query mongoDB for 3000 GeoJSON with multipolygons
body: <p>I have the following :</p>
  
  <ul>
  <li>openshift cardridges with Node.js 0.10 and MongoDB 2.4</li>
  <li>5000 GeoJSON files, each containing a single multipolygon</li>
  </ul>
  
  <p>I am trying to build an app where the user would submit the coordinates of a point and get a list of all the GeoJSON files where this point is inside (contained in) their multipolygon.</p>
  
  <p>What would be the fastest/most efficient way to process this query ? Any general idea/input is welcome, even if it is not using mongoDB. </p>
  
  <p>Thanks !</p>
  
  <p>Ps: I think I may have to wait for openshift to upgrade to mongoDB 2.6 to intersect a point and a multipolygon.</p>