Message Board - Serverless Real-Time Communication Platform

A scalable, event-driven message board application built with serverless architecture on AWS. The platform enables users to create discussion boards, post messages, and receive real-time notifications through WebSocket subscriptions.

Key Features

• Asynchronous Operations: User registration, board creation, and message posting with immediate API responses
• Real-Time Messaging: WebSocket-based subscriptions for instant message notifications
• Event-Driven Architecture: Decoupled components using SNS/SQS for reliable message processing
• Multi-Board Support: Users can subscribe to multiple boards simultaneously
• Auto-Scaling: Serverless design handles variable load automatically

Tech Stack

Backend Services:

• AWS Lambda - Serverless compute for API handlers and event processors
• API Gateway - REST API and WebSocket API management
• DynamoDB - NoSQL database with optimized indexes for users, boards, messages, and connections
• SNS/SQS - Event bus for asynchronous message processing
• AWS SDK v3 - Modern AWS service integration

Development & Deployment:

• TypeScript - Type-safe development with strict configuration
• Serverless Framework - Infrastructure as Code and deployment automation
• Node.js 22.x - Runtime environment
• Zod - Schema validation and type generation
• Vitest - Unit testing with 95% coverage threshold
• ESLint + Prettier - Code quality and formatting

Architecture Patterns:

• Event-Driven Architecture - Asynchronous processing with SNS/SQS
• CQRS - Separate read/write operations for optimal performance
• Microservices - Independent Lambda functions for different concerns
• Real-Time Broadcasting - WebSocket connections with DynamoDB state management

Operational:

• GitHub Actions - CI/CD pipeline with automated testing and deployment
• CloudWatch - Monitoring, logging, and observability
• Husky - Pre-commit hooks for code quality
• Multi-stage Deployment - Development and production environments

Architecture Highlights

• Serverless-First: No server management, automatic scaling, pay-per-use pricing
• Event-Driven: Producers and consumers decoupled for resilience and scalability
• Real-Time Capable: WebSocket integration for instant message delivery
• Cloud-Native: Built specifically for AWS services and best practices

This project demonstrates modern serverless application development with real-time capabilities, event-driven patterns, and production-ready DevOps practices.