Architecture & Design Patterns: Technologies

Architecture is the set of decisions that are expensive to change later. These guides explain the most influential architectural styles and patterns in the .NET ecosystem, with honest guidance on when each one helps and when it adds accidental complexity.

Explore Clean Architecture, Domain-Driven Design, CQRS and event sourcing, microservices and asynchronous messaging, the increasingly popular modular monolith, classic design patterns expressed in modern C#, and proven strategies for modernizing legacy .NET Framework applications.

Intermediate

Clean Architecture in .NET: A Practical Guide

Clean Architecture in .NET 10 explained: layers, the dependency rule, project layout, use case handlers, validation, mapping, testing and vertical slices.

17 min read

Advanced

Domain-Driven Design in C#: Tactical and Strategic Patterns

Domain-Driven Design in C#: ubiquitous language, bounded contexts, aggregates, value objects as records, domain events and EF Core 10 mapping patterns.

15 min read

Intermediate

CQRS and the Mediator Pattern in .NET: MediatR and Beyond

CQRS and the mediator pattern in .NET: commands, queries, handlers, pipeline behaviors, MediatR's license change, Wolverine, Mediator and read models.

14 min read

Advanced

Event Sourcing in .NET: Concepts and Implementation

Event sourcing in .NET explained: event stores, streams, projections, snapshots, upcasting, idempotency, Marten, KurrentDB and GDPR crypto-shredding.

14 min read

Advanced

Microservices Architecture with .NET

Microservices architecture with .NET: service boundaries, data ownership, gRPC and messaging, gateways, sagas, outbox, OpenTelemetry, Aspire and eShop.

15 min read

Advanced

Messaging in .NET: Azure Service Bus, RabbitMQ, Kafka and MassTransit

Compare Azure Service Bus, RabbitMQ and Kafka in .NET: delivery guarantees, idempotent consumers, the outbox pattern, dead-lettering and MassTransit.

16 min read

Intermediate

Modular Monoliths in .NET: Structure, Boundaries and Evolution

Build a modular monolith in .NET: module boundaries, per-module schemas, in-process messaging and NetArchTest or ArchUnitNET rules that hold as it grows.

14 min read

Intermediate

Design Patterns in Modern C#

Creational, structural and behavioral design patterns in modern C#, built with dependency injection and the patterns already inside the BCL and ASP.NET Core.

14 min read

Advanced

Modernizing .NET Framework Applications to Modern .NET

A practical roadmap for modernizing .NET Framework apps: assessment, AI-assisted tooling, System.Web adapters with YARP, CoreWCF and EF6 migration.

14 min read