Cool Store - Kubernetes-based polyglot microservices application with Istio service mesh

CoolStore is a containerised polyglot 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 https://vietnam-devs.github.io for more information about how can we design and implement it.

The business domain for internal µservice is inspired from CoolStore project by JBoss Demo Central and Red Hat Demo Central. The readme file is inspired from GoogleCloudPlatform Demo.

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OS, SDK, library, tooling and prerequisites

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)
istio - application works on Istio service mesh
helm - the best package manager to find, share, and use software built for Kubernetes
envoy-proxy - open source edge and service proxy, designed for cloud-native applications
.NET Core SDK 2.x - .NET Framework and .NET Core, including ASP.NET and ASP.NET Core
nodejs 10.x - JavaScript runtime built on Chrome's V8 JavaScript engine
typescript - a typed superset of JavaScript that compiles to plain JavaScript
identityserver - the Identity and Access Control solution for .NET Core
gRPC - a high-performance, open-source universal RPC framework
create-react-app - a modern web app by running one command
vue-cli - standard tooling for Vue.js development
apollo-client - the best way to use GraphQL to build client applications
tanka-graphql - GraphQL execution library with SignalR based server and ApolloLink implementation
netcorekit - a crafted microservices toolkit for building cloud-native apps on the .NET platform

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 manually with `Docker for desktop`

See https://vietnam-devs.github.io/docs/development/up-running-d4d-aks/#docker-for-desktop

Up and running with `docker compose`

$ docker-compose build
$ docker-compose up

Staging and Production environments

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

See https://vietnam-devs.github.io/docs/development/up-running-d4d-aks/#azure-kubernetes-service-aks

µService development

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

Open API

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.