AWS Serverless Blog Platform

Nền tảng blog hiện đại được xây dựng hoàn toàn trên kiến trúc Serverless của AWS, sử dụng Java 21 và Spring Boot 3.4. Dự án minh họa best practices cho việc xây dựng microservices trên AWS.

🏗️ Architecture

✨ Features

• Authentication - Đăng nhập/Đăng ký với AWS Cognito, JWT tokens
• Blog Posts - CRUD bài viết với Markdown support
• Comments - Hệ thống bình luận real-time
• User Profiles - Quản lý profile, upload avatar
• Email Notifications - Thông báo qua email (SNS + SES/Brevo)
• Media Storage - Upload ảnh lên S3 với pre-signed URLs

🛠️ Tech Stack

Backend

Technology	Purpose
Java 21	Runtime
Spring Boot 3.4	Application Framework
AWS Lambda	Serverless Compute
AWS SAM	Infrastructure as Code
DynamoDB	NoSQL Database (Single Table Design)
Amazon SNS	Event-driven Messaging
Amazon Cognito	Authentication
Amazon S3	Media Storage

Frontend

Technology	Purpose
React 19	UI Framework
TypeScript	Type Safety
Tailwind CSS 4	Styling
Vite	Build Tool

📁 Project Structure

├── common/                  # Shared module (entities, events, services)
├── profile-service/         # User management Lambda
├── post-service/            # Blog posts Lambda
├── comment-service/         # Comments Lambda
├── notification-service/    # Email notifications Lambda (SNS triggered)
├── web-app/ServerlessBlog/  # React frontend
└── infrastructure/          # CloudFormation templates

🗄️ DynamoDB Single Table Design

Entity	PK	SK
User	USER#<username>	PROFILE
Post	POST#<postId>	METADATA
Comment	POST#<postId>	COMMENT#<commentId>

🔔 Event-Driven Architecture

Services (post/comment/profile)
         │
         ▼
       SNS Topic
         │
         ▼
  notification-service (Lambda)
         │
         ▼
    SES / Brevo (Email)

Event Types: NEW_USER, NEW_POST, NEW_COMMENT

📊 AWS Services Used

Service	Purpose
API Gateway	HTTP API endpoints
Lambda	Serverless compute
DynamoDB	Primary database
Cognito	User authentication
SNS	Event notifications
S3	Static hosting & media storage
CloudWatch	Monitoring & logging
Secrets Manager	API keys storage

👨‍💻 Author

Le Khanh Duc

• GitHub: @lekhanhduc

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