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CoolStore Web Application - 🎡 Modern Application on Dapr and Tye ⛵

Travis (.org) Gitpod ready-to-code Price

CoolStore Website is a containerised microservices application consisting of services based on .NET Core running on Dapr. It demonstrates how to wire up small microservices into a larger application using microservice architectural principals.

This repository based on some of the old libraries. So be careful if you use it in your production environment!!!

We are working on practical-clean-ddd for the new version of building the .NET apps with domain-driven design, clean architecture with Docker, Kubernetes, Tye, and Dapr in a practical way 👍

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 medium, or my or say hi on Twitter!

Table of contents

Dapr Building Blocks

Name Usecase Apps Participants
Service-to-service invocation - User clicks to the detail product
- Populate product information for shopping cart items
- Order gets detail information of buyer
productcatalogapp, inventoryapp, shoppingcartapp, identityapp
State management Items in the shopping cart shoppingcartapp
Publish and subscribe User clicks checkout button, and the checkout process happens. It triggers the pub/sub flow in the system shoppingcartapp, saleapp, identityapp
Resource bindings Every 30 seconds and 1 minutes the validation process happens. It will change the status of order from Received to Process and Complete via Cron binding productcatalogapp, inventoryapp
Observability All apps in the application are injected by daprd so that it's tracked and observed by dapr identityapp, webapigatewayapp, inventoryapp, productcatalogapp, shoppingcartapp, saleapp, web
Secrets Bind with local secret file to hide password of redis inventoryapp, productcatalogapp, shoppingcartapp, saleapp
Actors N/A N/A


Home page


Shopping Cart page


Order page


Try it

Make sure you have dapr and tye installed on your machine!

Only wanna see wth is it?

$ tye run

Go to http://localhost:8000, and you're able to access to several endpoints whenevever it's ready as below:

Wanna go deeply to see how can we built it!

  1. Start core components
$ tye run tye.slim.yaml
  1. Start dapr apps locally via dapr cli
$ dapr run --app-port 5001 --app-id identityapp dotnet run -- -p src\Services\Identity\IdentityService\IdentityService.csproj
$ dapr run --app-port 5002 --app-id inventoryapp dotnet run -- -p src\Services\Inventory\InventoryService.Api\InventoryService.Api.csproj
$ dapr run --app-port 5003 --app-id productcatalogapp dotnet run -- -p src\Services\ProductCatalog\ProductCatalogService.Api\ProductCatalogService.Api.csproj
$ dapr run --app-port 5004 --app-id shoppingcartapp dotnet run -- -p src\Services\ShoppingCart\ShoppingCartService.Api\ShoppingCartService.Api.csproj

Now, you can start to develop, debug or explore more about dapr with tye via Coolstore Apps.

Enable vm.max_map_count for ElasticSearch via run sysctl -w vm.max_map_count=262144

OS, SDK, library, tooling and prerequisites


  • Windows 10 - The OS for developing and building this demo application.
  • WSL2 - 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 - Best package manager to find, share, and use software built for Kubernetes
  • dapr - An event-driven, portable runtime for building microservices on cloud and edge
  • tye - A developer tool that makes developing, testing, and deploying microservices and distributed applications easier


  • .NET Core 5 - .NET Framework and .NET Core, including ASP.NET and ASP.NET Core
  • IdentityServer4 - Identity and Access Control solution for .NET Core
  • YARP - A toolkit for developing high-performance HTTP reverse proxy applications
  • FluentValidation - Popular .NET validation library for building strongly-typed validation rules
  • MediatR - Simple, unambitious mediator implementation in .NET
  • EF Core - Modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations
  • Scrutor - Assembly scanning and decoration extensions for Microsoft.Extensions.DependencyInjection
  • serilog - Simple .NET logging with fully-structured events
  • NEST - Elasticsearch.Net & NEST


  • 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

µService development

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

µService Screenshot

Open API

OpenAPI Screenshot


Lift and Shift

Debug and Tracing Apps

  • Setup Kibana with TraceId, HandlerName, RequestPath, level and filter with HandlerName

Then, you can find the exception happend in code via Kibana dashboard with settings above. Grab the TraceId, then paste it to Zipkin dashboard, then you can see the tracing of this request as the following picture

Public presentation


  1. Fork it!
  2. Create your feature branch: git checkout -b my-new-feature
  3. Commit your changes: git commit -am 'Add some feature'
  4. Push to the branch: git push origin my-new-feature
  5. Submit a pull request :p

Contributors ✨

Thanks goes to these wonderful people (emoji key)

Thang Chung

💻 💬 📖 👀 🚇 🚧

Phuong Le

💻 📦 🚇

Phi Huynh

🤔 🚇

Thinh Nguyen

💻 🚧

Stuart Leeks



Code released under the MIT license.