rproenza86 / mern-on-aws

Project README - TODO Web App

Overview

This project is a monorepo MERN stack web application designed to manage TODO tasks. It is hosted on AWS and utilizes various services and technologies for a robust, scalable application.

Features

The application supports the following features:

• Create, retrieve, update, and delete TODO tasks.
• Real-time updates and state management on the frontend.
• Secure and scalable hosting on AWS.

Technical Details

Frontend

Technologies & Libraries

• React: A JavaScript library for building user interfaces.
• Tailwind CSS: A utility-first CSS framework for rapid UI development.
• React Context API: Used for state management across the React components.

Key Components

• TodoList: Displays the list of TODO tasks and handles interactions.
• GlobalContext: Manages the global state of the application, including TODO tasks and loading states.

Backend

Technologies & Libraries

• Node.js: JavaScript runtime built on Chrome's V8 JavaScript engine.
• AWS Lambda: Event-driven, serverless computing service.
• AWS API Gateway: Fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs.
• Amazon Cognito: Provides user authentication and authorization.

Lambda Functions

• CreateTodoLambda: Handles the creation of new TODO tasks.
• GetTodosLambda: Retrieves all TODO tasks.
• UpdateTodoLambda: Updates existing TODO tasks.
• DeleteTodoLambda: Deletes TODO tasks.
• GenPresignedUrlLambda: Generates presigned URLs for S3 uploads.

Infrastructure

Technologies & Frameworks

• AWS CDK: Framework for defining cloud infrastructure using familiar programming languages.
• Amazon DynamoDB: NoSQL database service that provides fast and predictable performance with seamless scalability.
• Amazon S3: Object storage service that offers industry-leading scalability, data availability, security, and performance.

Key Constructs

• BackendConstruct: Sets up the backend services including Lambda functions and API Gateway.
• DataBaseConstruct: Manages the DynamoDB resources.
• S3Construct: Manages the S3 buckets for static file hosting and image uploads.

Deployment

• S3 Bucket: Hosts the static files for the frontend.
• CloudFront: CDN service that securely delivers data, videos, applications, and APIs to customers globally.

Security

Authentication & Authorization

• Amazon Cognito: Used for user authentication and authorization.
• API Gateway Authorizers: Secures API endpoints using Cognito user pools.

Programming Techniques

• Infrastructure as Code (IaC): Using AWS CDK to define and provision AWS infrastructure.
• Serverless Architecture: Utilizing AWS Lambda for business logic, reducing the need for server management.
• Continuous Integration and Deployment: Automated build and deployment pipelines enhance the development process.

Conclusion

This project leverages modern web technologies and AWS services to deliver a scalable and maintainable TODO web application. It demonstrates effective use of serverless architecture and IaC for efficient cloud resource management.