title: GAE python: What should I use for an operation that last for around 3 mins?
body: <p>I need to get some data with app engine using urlfetch. The operation lasts for around 3 mins when doing it locally. </p>
  
  <p>However, I've tried to use cron to do it but it returns errors with an F2 instance.</p>
  
  <pre><code>Traceback (most recent call last): File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 267
  
  This request caused a new process to be started for your application, and thus caused your application code to be loaded for the first time. 
  </code></pre>
  
  <p>So my question is what should I use to do this? Anyway I can fix it using cron or do I use module or taskqueue or background_thread to do it? Any advice will be appreciated.</p>