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what is modular-monolith-with-ddd fr?

kgrzybek/modular-monolith-with-ddd — explained in plain English

Analysis updated 2026-06-24

13,657C#Audience · developerComplexity · 4/5LicenseSetup · moderate

tl;dr

A complete, real-world .NET application in C# that shows how to structure a large app into clean, self-contained modules using Domain-Driven Design and CQRS.

vibe map

mindmap
  root((modular-monolith-ddd))
    Architecture
      Modular monolith
      Domain-Driven Design
      CQRS pattern
      Event sourcing
    Features
      Authentication
      Logging
      Unit tests
      Integration tests
    Tech Stack
      C#
      .NET
      React
      SQL
    Domain
      Meeting groups
      User accounts
      Meetup-style rules

Code map

Detail Auto

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filefunction / class

what do people make with this?

VIBE 1

Study a production-quality example to learn how to split a .NET application into modules without turning it into microservices.

VIBE 2

Use the architecture decisions and diagrams as a reference when designing your own .NET app with Domain-Driven Design.

VIBE 3

See how CQRS separates read and write operations in a real application with authentication, logging, and tests included.

VIBE 4

Copy the meeting-group domain model as a starting template for a .NET app that has real business rules beyond basic create-read-update-delete.

what's the stack?

C#.NETReactSQL

how it stacks up fr

kgrzybek/modular-monolith-with-dddradarr/radarrbabalae/better-genshin-impact
Stars13,65713,62213,524
LanguageC#C#C#
Setup difficultymoderatemoderatemoderate
Complexity4/53/53/5
Audiencedevelopergeneralgeneral

Figures from each repo's GitHub metadata at analysis time.

how do i run it?

Difficulty · moderate time til it works · 1h+

Requires .NET SDK and a SQL database, the React front end needs Node.js, full setup involves reading the architecture documentation.

Use is conditional on the user taking a public stance on the Russia-Ukraine conflict, review the repository license before use.

in plain english

This repository is a full, working .NET application built in C# that demonstrates how to structure a moderately large application as a modular monolith using Domain-Driven Design principles. A modular monolith means the code runs as a single deployed application, but is organized internally into clear, self-contained modules rather than a tangle of interconnected code. Domain-Driven Design is an approach where the structure of the code closely mirrors the real-world business concepts and rules it represents. The author built this because most example projects on GitHub that claim to show these patterns are either too simple to be useful, unfinished, or do not clearly explain the decisions behind them. The goal here is to show what a real, production-ready implementation looks like, including things like authentication, logging, unit tests, integration tests, event sourcing, and database change management. The business domain chosen for the example is a meeting-group organizer, similar to Meetup.com. Users can join groups, create meetings, and interact with other members. This domain was picked because it is familiar to many people, has real business rules beyond simple create-read-update-delete operations, and does not require specialized knowledge to understand. The project also uses an architectural pattern called CQRS, which separates the actions that read data from the actions that write data. There is a companion front-end application built in React. The README includes diagrams, architecture decision records, and detailed explanations of each design choice. The project requires a stance on the Russia-Ukraine conflict as a condition of use, as stated in the repository itself. The full README is longer than what was shown.

prompts (copy fr)

prompt 1
Based on the kgrzybek modular monolith example, show me how to define a module boundary in .NET with an internal API that other modules can call without direct class references.
prompt 2
How does kgrzybek/modular-monolith-with-ddd implement CQRS commands and queries? Show me the pattern for adding a new command handler.
prompt 3
Walk me through the event sourcing setup in kgrzybek/modular-monolith-with-ddd and how domain events are dispatched between modules.
prompt 4
How do I run the kgrzybek modular monolith sample locally including the database migrations and the React front end?

Frequently asked questions

what is modular-monolith-with-ddd fr?

A complete, real-world .NET application in C# that shows how to structure a large app into clean, self-contained modules using Domain-Driven Design and CQRS.

What language is modular-monolith-with-ddd written in?

Mainly C#. The stack also includes C#, .NET, React.

What license does modular-monolith-with-ddd use?

Use is conditional on the user taking a public stance on the Russia-Ukraine conflict, review the repository license before use.

How hard is modular-monolith-with-ddd to set up?

Setup difficulty is rated moderate, with roughly 1h+ to a first successful run.

Who is modular-monolith-with-ddd for?

Mainly developer.

peek the repo → explain another one

This repo across BitVibe Labs

double-check against the repo, no cap.