Telemetry Use Case

added Telemetry Use Case showing Fibonacci workload

content/en/docs/concepts/3_use-cases/_index.md

@@ -40,6 +40,19 @@ Deploy and develop the famous socks shops:
 
 * https://github.com/kezoo/nestjs-reactjs-graphql-typescript-boilerplate-example
 
+### Telemetry Use Case with respect to the Fibonacci workload
+
+The Fibonacci App on the cluster can be accessed on the path https://cnoe.localtest.me/fibonacci.
+It can be called for example by using the URL https://cnoe.localtest.me/fibonacci?number=5000000.
+
+The resulting ressource spike can be observed one the Grafana dashboard "Kubernetes / Compute Resources / Cluster".
+The resulting visualization should look similar like this:
+
+
+![alt text](fibonacci-app_cpu-spike.png)
+
+
+
 ## When and how to use the developer framework?
 
 ### e.g. an example