NestJS Microservices Architecture

This project implements a microservices architecture using NestJS, featuring multiple services and a comprehensive monitoring setup.

Project Structure

The project consists of the following services:

• API Gateway: Main entry point for all client requests
• Auth Service: Handles authentication and authorization
• Billing Service: Manages billing and payment processing

Prerequisites

• Docker and Docker Compose
• Node.js (v16 or higher)
• npm or yarn

Getting Started

Development Environment

1. Clone the repository:

git clone <repository-url>
cd nestjs-microservice

2. Start the development environment:

docker-compose -f docker-compose.dev.yml up -d

Production Environment

To start the production environment:

docker-compose -f docker-compose.prod.yml up -d

Monitoring Setup

The project includes a monitoring stack with Prometheus and Grafana:

• Prometheus: Available at http://localhost:9090
• Grafana: Available at http://localhost:3001
  • Default credentials:
    • Username: admin
    • Password: admin

To start the monitoring stack:

docker-compose -f docker-compose.monitoring.yml up -d

Service Ports

• API Gateway: 3000
• Auth Service: 3001
• Billing Service: 3002
• Prometheus: 9090
• Grafana: 3001

Configuration

Configuration files are located in the configs/ directory:

• Prometheus configuration: configs/prometheus.yml
• Grafana provisioning: configs/grafana/provisioning/

Development

Running Services Individually

Each service can be run independently:

# Auth Service
cd auth
npm install
npm run start:dev

# Billing Service
cd billing
npm install
npm run start:dev

# API Gateway
cd api-gateway
npm install
npm run start:dev

Needed to set the below additional kafka client properties in the producer/consumer:

security.protocol=SASL_PLAINTEXT sasl.mechanism=PLAIN sasl.jaas.config=org.apache.kafka.common.security.plain.PlainLoginModule required username="admin" password=" admin-secret";

when run without nestjs