NestJS Microservice gRPC

Introduction

This project uses NestJS microservices with gRPC for inter-service communication. It follows a monorepo structure and applies CQRS for clear separation of command and query operations. The system leverages Event Sourcing with Event Store and integrates Kafka for asynchronous messaging and scalability.

Technologies Used

• NestJS: A backend framework for Node.js with TypeScript, enabling scalable and maintainable applications.

• Monorepo: All projects are stored in a single repository for easier management and integration.

• gRPC: A high-performance RPC framework for efficient microservice communication.

• CQRS: Separates command (write) and query (read) operations for better performance and scalability.

• Kafka: A distributed stream processing platform that allows real-time data transmission and processing in microservices systems.

• Event Sourcing: Stores events instead of system state, allowing the recreation of the state from the stored events.

• Event Store: A system for storing events in Event Sourcing, enabling state recovery.

• MySQL: A relational database used to store and manage the application's core data.

• MongoDB: A NoSQL database used for storing event stores, suitable for systems that require event-driven architecture and flexible scalability.

Installation Guide

Step 1: Clone the Project

Clone the project to your local machine:

git clone https://github.com/maivankien/nestjs-microservice-grpc.git
cd nestjs-microservice-grpc

Step 2: Config environment

Configure .env file based on .env.example file

Step 3: Run Docker Compose

Start the services using Docker Compose:

docker-compose up -d

Step 4: Create table

Create sql tables

Visit: http://localhost:3000/api-gateway