title: mongoError: Topology was destroyed
body: <p>I have a REST service built in node.js with Restify and Mongoose and a mongoDB with a collection with about 30.000 regular sized documents.
  I have my node service running through pmx and pm2.</p>
  
  <p>Yesterday, suddenly, node started crapping out errors with the message "MongoError: Topology was destroyed", nothing more.
  I have no idea what is meant by this and what could have possibly triggered this. there is also not much to be found when google-searching this. So I thought I'd ask here.</p>
  
  <p>After restarting the node service today, the errors stopped coming in.
  I also have one of these running in production and it scares me that this could happen at any given time to a pretty crucial part of the setup running there...</p>
  
  <p>I'm using the following versions of the mentioned packages:</p>
  
  <ul>
  <li>mongoose: 4.0.3</li>
  <li>restify: 3.0.3</li>
  <li>node: 0.10.25</li>
  </ul>