Using CQRS and Event Sourcing in NestJS

Traditional CRUD applications can become difficult to scale and audit as complexity grows. In this tutorial, we explore how to implement CQRS (Command Query Responsibility Segregation) and Event Sourcing using NestJS and the official @nestjs/cqrs package.

You'll learn how to build:

• Commands and Command Handlers
• Queries and Query Handlers
• Domain Events and Event Handlers
• Aggregates and Read Models
• Event-driven workflows with Sagas
• Production-ready Event Sourcing architectures

Perfect for developers building scalable backends, microservices, and audit-heavy applications.

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Using CQRS and Event Sourcing in NestJS: Build Scalable Event-Driven Applications