NestJS Microservices Proof of Concept A comprehensive demonstration of NestJS microservices architecture with two core services communicating over TCP transport, featuring resilience patterns, validation, and event-driven communication. 🏗️ Architecture Overview This project demonstrates a microservices architecture with the following components: User Service (Port 4000/4001): Manages user registration and data Notification Service (Port 4002/4003): Handles notification sending and tracking API Gateway (Port 4004): Orchestrates communication between services Shared Package: Common DTOs, interfaces, and constants 📁 Project Structure nest-microservices-poc-2/ ├── packages/ │ └── shared/ # Shared utilities and types │ ├── src/ │ │ ├── dto/ # Data Transfer Objects │ │ ├── interfaces/ # TypeScript interfaces │ │ ├── constants/ # Message and event patterns │ │ └── index.ts # Public exports │ ├── package.json │ └── tsconfig.json ├── services/ │ ├── user-service/ # User Management Service │ │ ├── src/ │ │ │ ├── entities/ # TypeORM entities │ │ │ ├── users/ # User module │ │ │ ├── config/ # Database configuration │ │ │ ├── common/ # Filters, interceptors, retry logic │ │ │ ├── app.module.ts │ │ │ └── main.ts │ │ └── package.json │ ├── notification-service/ #…Read More