title: generate URL on node.js server
body: <p>I'm looking for a professional technique to generate unique URL addresses. I created a node.js server that should give out these URLs to accessing clients.
  How can I provide the URLs?</p>
  
  <pre><code>// user is connecting to www.privatebox.de
  
  // server serves index.html with unique ID
  
  // e.g. www.privatebox.de/8yfuzyzzm7
  </code></pre>