Chat Microservices Application

A production-ready microservices-based chat application with real-time messaging, user management, and image sharing.

Features

• ✅ User Registration & Authentication (JWT)
• ✅ Real-time Chat (Public & Private)
• ✅ Image Posts with Preview & Resize
• ✅ User Profiles with Image Upload
• ✅ System Monitoring Dashboard
• ✅ Online Users Tracking

Quick Start

# Start the application
./start.sh

# Test all services
./test-services.sh

# Access application
http://localhost:3000

Services

Service	Port	Technology	Purpose
Frontend	3000	React	Web Interface
User Service	8080	Spring Boot	Authentication
Chat Service	3001	Node.js	Real-time Chat
Posts Service	8083	Go	Image Sharing
Profile Service	8081	Python FastAPI	User Profiles
Monitoring	8082	Spring Boot	System Health

API Examples

User Registration

curl -X POST http://localhost:8080/api/users/register \
  -H "Content-Type: application/json" \
  -d '{"username":"newuser","email":"user@example.com","password":"password123"}'

User Login

curl -X POST http://localhost:8080/api/users/login \
  -H "Content-Type: application/json" \
  -d '{"username":"newuser","password":"password123"}'

Development

Prerequisites

• Docker & Docker Compose

Commands

# Start services
./start.sh

# Stop services
docker compose down

# View logs
docker logs chat-microservices-[service-name]-1

# Rebuild service
docker compose build [service-name]

Troubleshooting

1. Port conflicts: Ensure ports 3000, 3001, 8080-8083, 5432, 27017, 6379, 9092 are available
2. Docker issues: Run docker compose down then ./start.sh
3. Database issues: Clear data with docker volume prune

Production Deployment

1. Update environment variables in docker-compose.yml
2. Configure SSL/TLS certificates
3. Set up monitoring and logging
4. Configure database backups

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Ready for production! 🚀