CoolStore Web Application - 🎡 Kubernetes-based Microservices Application on Service Mesh ⛵

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CoolStore Website is a containerised microservices application consisting of services based on .NET Core, NodeJS and more running on Service Mesh. It demonstrates how to wire up small microservices into a larger application using microservice architectural principals. Read documentation for more information.

The business domain is inspired from CoolStore project by JBoss Demo Central and Red Hat Demo Central.

Check out my blog or say hi on Twitter!

Try it online

Usage with careful: The project is in development mode so that a lot of things shall change due to .NET Core 3.x upgrading.

Public presentation

Screenshots

Home page

Shopping Cart page

Business Context

Conceptual Model

Event Storming

Context Map

OS, SDK, library, tooling and prerequisites

Infrastructure

Windows 10 - the OS for developing and building this demo application.
Windows subsystem Linux - Ubuntu OS - the subsystem that helps to run easily the bash shell on Windows OS.
Docker for desktop (Kubernetes enabled) - the easiest tool to run Docker, Docker Swarm and Kubernetes on Mac and Windows.
Kubernetes / AKS - the app is designed to run on Kubernetes (both locally on "Docker for Desktop", as well as on the cloud with AKS).
helm - the best package manager to find, share, and use software built for Kubernetes.
istio - application works on Istio service mesh.
linkerd2 - a service mesh for Kubernetes and beyond.

Back-end

.NET Core 3.x - .NET Framework and .NET Core, including ASP.NET and ASP.NET Core.
IdentityServer4 - the Identity and Access Control solution for .NET Core.
gRPC - a high-performance, open-source universal RPC framework.
Redis - General purpose redis client.
NEST - Elasticsearch.Net & NEST.

Front-end

nodejs 10.x - JavaScript runtime built on Chrome's V8 JavaScript engine.
typescript - a typed superset of JavaScript that compiles to plain JavaScript.
create-react-app - a modern web app by running one command.

High level software architecture

There are several individual µservices and infrastructure components that make up this app:

No.	Service	Description	Source	Endpoints
1.	IdP (.NET Core + In-memory database)	Uses IdentityServer4 to authentication with OAuth 2.0 and OpenID Connect for the whole stack	code	dev and staging
2.	GraphQL server (.NET Core)	The GraphQL server for backoffice application	code	dev and staging
3.	OpenApi (.NET Core + envoy-proxy)	The OpenAPI which generated from gRPC contract files, hosted in OpenAPI format, and used envoy-proxy to proxy it	code	dev and staging
4.	Web (PWA - Vuejs + Node.js)	Frontend based on vuejs and Node.js	code	dev and staging
5.	Backoffice (React + TypeScript + Apollo-client)	The back office application for management business entities in the system	code	dev and staging
6.	Catalog (Node.js + TypeScript + Mongo)	Serves products and prices for retail products	code	dev
7.	Cart (.NET Core + MySQL)	Manages shopping cart for each customer	code	dev
8.	Inventory (.NET Core + MySQL)	Serves inventory and availability data for retail products	code	dev
9.	Rating (Node.js + TypeScript + Mongo)	Runs for rating products	code	dev

Installation

Development environment

Up and running with `Docker` and `docker compose`

$ docker-compose -f docker-compose.yml -f docker-compose.dev.yml build
$ docker-compose -f docker-compose.yml -f docker-compose.dev.yml up -d

See https://vietnam-devs.github.io/coolstore-microservices/development/#up-and-running-with-docker-and-docker-compose

Staging and Production environments

Up and Running on `Azure Kubernetes Service` (`AKS`)

See https://vietnam-devs.github.io/coolstore-microservices/development/#up-and-running-manually-on-docker-for-desktop-and-aks

µService development

Guidance for developing µService can be found at Clean Domain-Driven Design in 10 minutes

Open API

https://documenter.getpostman.com/view/4847807/SVmvUeZv?version=latest#9f5ed7e4-e855-46e5-a42d-64edb31bc1cb

CI/CD

Service mesh

istio provide a wealth of benefits for the organizations that use them. There’s no denying, however, that adopting the cloud can put strains on DevOps teams. Developers must use microservices to architect for portability, meanwhile operators are managing extremely large hybrid and multi-cloud deployments. Istio lets you connect, secure, control, and observe services.