[Update Course] .NET 8 Backend Bootcamp: Modulith, VSA, DDD, CQRS and Outbox

.NET 8 Backend Bootcamp: Modulith, VSA, DDD, CQRS and Outbox | Udemy [Update 02/2026]
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Genre: eLearning

What you’ll learn:
Modular Monoliths (Modulith) Architecture
Vertical Slice Architecture (VSA)
Domain-Driven Design (DDD)
Command Query Responsibility Segregation (CQRS)
Outbox Pattern for Reliable Messaging
CQRS (Command Query Responsibility Segregation) and Vertical Slice architectures for module development
Communicate over In-process method calls-public APIs and use RabbitMQ for event-driven communication
Secure APIs with Keycloak, using OpenID Connect and Bearer Tokens
ASPNET Core Minimal APIs and latest features of .Net8 and C# 12
Vertical Slice Architecture implementation with Feature folders
DDD, CQRS Patterns using MediatR library w/ following Best Practices
Use Domain Events & Integration Events when UpdatePriceChanged event
Use Entity Framework Core Code-First Approach and Migrations on PostgreSQL Database
Cross-cutting Concerns including Logging with Serilog, Validation with MediatR Pipeline Behaviors, Exceptions, Pagination
Using Redis as a Distributed Cache over PostgreSQL database
Develop Proxy, Decorator and Cache-aside patterns
Sync Communications between Catalog and Basket Modules w/ In-process Method Calls (Public APIs)
Async Communications between Modules w/ RabbitMQ & MassTransit
Develop User Identity Module with Keycloak Authentication
OAuth2 + OpenID Connect Flows with Keycloak
Outbox Pattern For Reliable Messaging w/ BasketCheckout Use Case
Publish BasketCheckoutEvent to RabbitMQ via MassTransit library, Consume from Ordering Module
Migrating to Microservices: EShop Modules to Microservices w/ Stranger Fig Pattern

In this bootcamp, you’ll learn how to build robust

, scalable

, and maintainable applications

using cutting-edge technologies and architectural patterns.

We will develop;

1. Modular Monoliths (Modulith) Architecture

2. Vertical Slice Architecture (VSA)

3. Domain-Driven Design (DDD)

4. Command Query Responsibility Segregation (CQRS)

5. Outbox Pattern for Reliable Messaging

We start with the basics and progressively

dive deeper

into each topic. You’ll get hands-on experience building a complete EShop Modular Monolith application

, implementing features like CQRS and the Outbox pattern.

We’ll follow CQRS (Command Query Responsibility Segregation) and Vertical Slice architectures for module development.

Modules will communicate over In-process method calls-public APIs and use RabbitMQ for event-driven communication.

We’ll secure

our APIs

with Keycloak

, using OpenID Connect and Bearer Tokens.

We’ll implement the Outbox Pattern

for reliable messaging

between modules.

Along with this you’ll develop following modules and items:

Catalog module which;

Using Asp.Net Core Minimal APIs and latest features of .Net8 and C# 12

Develop Vertical Slice Architecture implementation with Feature folders

Develop DDD, CQRS Patterns using MediatR library w/ following Best Practices

Use Domain Events & Integration Events when UpdatePriceChanged event

Use Entity Framework Core Code-First Approach and Migrations on PostgreSQL Database

Use Carter for expose Minimal Api endpoints

Cross-cutting Concerns including Logging with Serilog, Validation with MediatR Pipeline Behaviors, Exceptions, Pagination

Basket module which includes;

Similar to Catalog Module; Develop DDD, CQRS, Vertical Slice Architecture implementation

Additionally;

Using Redis as a Distributed Cache over PostgreSQL database

Develop and Implements Proxy, Decorator and Cache-aside patterns

Publish BasketCheckoutEvent to RabbitMQ via MassTransit library

Implement Outbox Pattern For Reliable Messaging w/ BasketCheckout Use Case

Module Communications;

Sync Communications between Catalog and Basket Modules with In-process Method Calls (Public APIs)

Async Communications between Modules w/ RabbitMQ & MassTransit for UpdatePrice Between Catalog-Basket Modules

Identity Module which includes;

Develop User Identity Module with Keycloak Authentication

OAuth2 + OpenID Connect Flows with Keycloak

Setup Keycloak into Docker-compose file for Identity Provider as a Backing Service

Secure EShop Modules with Keycloak OpenId Connect in AspNet

JwtBearer token for OpenID Connect with Keycloak Identity

Ordering Module which includes;

Similar to the Catalog and Basket Module; Develop DDD, CQRS, Vertical Slice Architecture implementation

Implement Outbox Pattern For Reliable Messaging w/ BasketCheckout Use Case

Lastly, we will discuss

Migrating to Microservices: EShop Modules to Microservices w/ Stranger Fig Pattern

This course is more than just learning .NET

, it’s a deep dive into the world ofModular Monoliths

withVertical-Slice Architecture, Domain-Driven Design (DDD), CQRS

, andadvanced architectural patterns for Backend Development

Who this course is for:
Beginner to Senior .NET Developers who is curious about .NET Backend technologies with Modular Monolith Architectures

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[Update Course] .NET 8 Backend Bootcamp: Modulith, VSA, DDD, CQRS and Outbox | Udemy

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