title: Quickly finding the size of an S3 'folder'
body: <p>We have s3 'folders' (objects with a prefix under a bucket) with millions and millions of files and we want to figure out the size of these folders.</p>
  
  <p>Writing my own .net application to get the lists of s3 objects was easy enough but the maximum number of keys per request is 1000, so it's taking forever.</p>
  
  <p>Using S3Browser to look at a 'folder's' properties is taking a long time too.  I'm guessing for the same reasons.</p>
  
  <p>I've had this .NET application running for a week - I need a better solution.</p>
  
  <p>Is there a faster way to do this?</p>