Cloud Game Leaderboard – Real-Time Multiplayer Stats

A real-time, cloud-hosted leaderboard system for multiplayer games demonstrating event-driven processing, scalable architecture, and secure AWS deployment.

Architecture

The system uses an **event-driven serverless/cloud architecture**:

Player submits a score → triggers **API Gateway** endpoint.
**Lambda function** validates and processes the score, storing it in **DynamoDB**.
Optional **WebSocket API** updates the live leaderboard in real-time.
**SNS** sends notifications to admins for top scores or anomalies.
**CloudWatch** monitors Lambda, API Gateway, and DynamoDB metrics and triggers alarms.

Optional: Include a diagram showing API Gateway → Lambda → DynamoDB → WebSocket/SNS → CloudWatch.

Features & Highlights

Real-time leaderboard updates using **WebSocket API** (optional).
Player authentication and stats tracking with **Cognito** or minimal IAM roles.
Secure **IAM least-privilege roles** for Lambda, DynamoDB, and SNS.
**CloudWatch dashboards** and alarms for observability and reliability.
Frontend is responsive and mobile-friendly using **HTML/CSS/JS** (React optional).
Deployed using **Infrastructure-as-Code** via Terraform or CloudFormation.

Code & Demo

View the full repository and Lambda/WebSocket function examples:

GitHub Repo

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