Microservices Demo Application

Service	Description
api-gateway	Used as an entry point for clients to communicate with the rest of the application. It's built as RESP API and uses JSON for communication.
cart	Stores the products and their quantity in the shopping cart by sessionId and allowes to retrieve them.
checkout	Retrieves user cart, prepares order and charges user provided card.
currency	Provides a list of supported currencies and makes a conversion from one currency to another.
payment	Charges provided debet/credit card with the given amount (mock) and return a transaction ID for reference.
products	Allows getting list of products and individual products by ID.
shipping	Provides shipping cost estimates based on the shopping cart (mock). Ships items to the given address and returns tracingId (mock).

How To Run

Prerequisites

• Docker for Desktop
• kubectl
• skaffold
• Minikube / kind

Local Cluster

1. Launch a local k8s cluster minikube start --cpus='2' --memory='3.9g' or kind create cluster.
2. Verify the cluster is operating minikube status and it's possible to connect to control plane kubectl get nodes.
3. Run skaffold run or skaffold dev. This will build and deploy the application. If skaffold dev is used it will rebuild the images automatically as you change the code.
4. Run kubectl get pods to verify that the Pods are operating well.
5. Run kubectl port-forward svc/api-gateway-service 8080:8080 to forward a port to the api-gateway service.
6. Use localhost:8080 to access the api-gateway service.

Cleanup

1. Use skaffold delete if you used skaffold run or just stop skaffold dev by pressing ctrl+c.
2. Run minikube stop to stop Minikube cluster or minikube delete to delete it.