Java (Spring Boot, Vert.x and Microprofile) + Istio on Kubernetes/OpenShift

• A HTML version of this file is published at https://redhat-developer-demos.github.io/istio-tutorial/

• The source code is available at https://github.com/redhat-developer-demos/istio-tutorial

• Download the ebook "Introducing Istio Service Mesh for Microservices" for FREE at https://developers.redhat.com/books/introducing-istio-service-mesh-microservices/.

• If you are in a hurry and want to get hands-on with Istio insanely fast, just go to http://learn.openshift.com/servicemesh and start instantly.

There are three different and super simple microservices in this system and they are chained together in the following sequence:

customer → preference → recommendation

For now, they have a simple exception handling solution for dealing with a missing dependent service: it just returns the error message to the end-user.