title: Google Colab session timeout
body: <p>In the <a href="https://research.google.com/colaboratory/faq.html" rel="noreferrer">FAQs</a> it is mentioned that</p>
  <blockquote>
  <p>Virtual machines are recycled when idle for a while, and have a maximum lifetime enforced by the system.</p>
  </blockquote>
  <p>Are the maximum lifetime and idle times fixed or variable? Is there any way to predict them?</p>