If you have a single-node OpenShift cluster, such as Minishift or Red Hat Container Development Kit, installed and running, you can also deploy your example application there. A single-node OpenShift cluster provides you with access to a cloud environment that is similar to a production environment.

To deploy your example application to a running single-node OpenShift cluster:

1. Navigate to the root directory of your example application.

   $ git clone [email protected]:bnair2001/dash
   
   $ cd dash

2. Log in and create your project.

   $ oc login -u developer -p developer
   
   $ oc new-project MY_PROJECT_NAME

3. Deploy the cache service.

   $ oc create -f service.cache.yml

4. Deploy your example application.

   $ ./start-openshift.sh

1. Determine the URL of the greeting service.

   $ oc get route ${value-name-app} -o jsonpath={$.spec.host}
   
   ${value-name-app}-MY_PROJECT_NAME.LOCAL_OPENSHIFT_HOSTNAME

2. Navigate to the greeting service using your browser.

3. Click Invoke the service once.

   Notice the duration value is above 2000. Also notice the cache state has changed form No cached value to A value is cached.

4. Wait 5 seconds and notice cache state has changed back to No cached value.

   The TTL for the cached value is set to 5 seconds. Once the TTL expires, the value is no longer cached.

5. Click Invoke the service once more to cache the value.

6. Click Invoke the service a few more times over the course of a few seconds while cache state is A value is cached.

   Notice a significantly lower duration value since it is using a cached value. If you click Clear the cache, the cache is emptied.

You can learn more about this example application and the Node.js runtime in the Node.js Runtime Guide.