withistio.svg title="The original Bookinfo application"><img class=element-to-stretch src=/v1.8/docs/examples/bookinfo/withistio.svg alt="The original Bookinfo application"></a></div><figcaption>The original Bookinfo application</figcaption></figure><h3 id=use-the-external-database-in-bookinfo-application>Use the external database in Bookinfo application</h3><ol><li><p>Deploy the spec of the <em>ratings</em> microservice that uses a MongoDB database (<em>ratings v2</em>):</p><div><a data-skipendnotes=true s