ookinfo</a> sample consists of four separate microservices, each with multiple versions.
Three different versions of one of the microservices, <code>reviews</code>, have been deployed and are running concurrently.
To illustrate the problem this causes, access the Bookinfo app&rsquo;s <code>/productpage</code> in a browser and refresh several times.
The URL is <code>http://$GATEWAY_URL/productpage</code>, where <code>$GATEWAY_URL</code> is the External IP address of the ingress, as explained in
the <a href=/