title: Caching a weather data from OpenWeatherMap.org
body: <p>I'd like to use <a href="http://openweathermap.org/API" rel="nofollow">free weather data API</a> from OpenWeatherMap.org in my iPhone app to show a weather map (current weather data). I'm going to request a JSON data by using "<a href="http://bugs.openweathermap.org/projects/api/wiki/Api_2_5/6#Bounding-Box-find" rel="nofollow">Bounding Box find</a>" method. Plus, I'm going to use server clustering of points (i.e. by adding "&amp;cluster=yes" parameter to a request url).</p>
  
  <p>The problem is this approach might produce a lot of requests to server when region is changed. For example, when zoom level is changed or scrolling is used.</p>
  
  <p>Is there a way to reduce amount of requests to server? Maybe it's possible to cache a data for region or use NSURLCache somehow to accomplish that by caching the requests?</p>
  
  <p>Will be very grateful for any ideas!</p>