title: Unserializing large Blobs from the Blobstore
body: <p>I store large Blobs in the datastore. These are XML files that can be as large as 20mb. Storing a single 20mb XML file is fine, however the issue comes when I need to unserialize it.</p>
  
  <p>There are all sorts of limitations to this: </p>
  
  <ul>
  <li>I cannot read more than 1mb from Blobstore</li>
  <li>even if I could I'm still confronted with the 5mb RAM limitation (since I need to put all the XML into RAM before unserializing it)</li>
  </ul>
  
  <p>How would you say I can handle this? I'm open to all sorts of solutions, but hopefully not something that involves using another hosting provider.</p>