title: How calculate the number of instances in Google App Engine
body: <p>I aim to create an application that will be deployed thanks to Google App Engine.</p>
  
  <p>Before that I would like to calculate the cost of Google App Engine.</p>
  
  <p>For this I have to provide the Number of instances, per hour. How can caluculate this number of Instances ?</p>
  
  <p>To reformulate, imagine I have 1 thousand users connected, how many users can 1 instance afford ?</p>
  
  <p>Thank you for your answer and help</p>
  
  <p>Regards</p>
  
  <p>Benoit</p>