EventDriven.CQRS.Abstractions

Abstractions for implementing Command Query Responsibility Segregation in .NET.

Prerequisites

• .NET Core SDK (6.0 or greater)

Packages

• EventDriven.CQRS.Abstractions
• EventDriven.CQRS.Extensions

Introduction

Command Query Responsibility Segregation (CQRS) is a software a pattern that separates read and update operations for a data store.

Note: EventDriven.CQRS.Abstractions version 2.0 or later uses MediatR to enable a handler per command pattern with behaviors for cross-cutting concerns.

The EventDriven.CQRS.Abstractions library contains interfaces and abstract base classes to support these concepts:

• Command: An object that is sent to the domain for a state change which is handled by a command handler.
• Queries: An object that is sent to the domain to retrieve data which is handled by a query handler.

Reference Architecture and Development Guide

Please refer to the EventDriven.ReferenceArchitecture repository for a reference architecture and development guide based on the principles of Domain Driven Design (DDD), Command Query Responsibility Segregation (CQRS) and Event Driven Architecture (EDA).