About This Project
A transaction web app that simulates Paytm features for smoother, simpler digital payments and experience.
Key Features
- Secure money transfers between users
- Transaction history and tracking
- User authentication and profile management
- Real-time balance updates
Development Progress
Fully deployed and operational with core payment functionalities.
Technology Stack
The Journey Behind
Motivation
As my first full-stack project, I wanted to understand how digital payment systems work under the hood. Paytm's simplicity inspired me to build a similar platform where I could learn the complete flow from user authentication to real-time transactions.
- •Learn full-stack development from scratch
- •Understand payment system architecture
- •Connect frontend to backend APIs
- •Build a production-ready application
Development Journey
Set up MongoDB database schema for users and transactions
Built RESTful API with Express for authentication and transfers
Created React components for user interface
Integrated frontend with backend APIs
Implemented authentication with JWT tokens
Styled application with Tailwind CSS
Deployed to Vercel for production hosting
Technical Challenges
- •API Integration:First time connecting frontend to backend APIs. Learned how to handle HTTP requests, manage loading states, and process responses effectively.
- •State Management:Managing state across multiple components for transaction flows proved complex. Had to learn React state patterns and data flow.
- •Authentication Flow:Implementing secure user authentication with JWT tokens required understanding token storage, validation, and protected routes.
- •Asynchronous Operations:Handling async operations for API calls, managing loading states, and providing user feedback during transactions.
- •Data Consistency:Ensuring money transfers were atomic and maintaining balance consistency across database operations.
- •Error Handling and Edge Cases:Dealing with unexpected errors such as failed transactions, network issues, and invalid user input. Had to implement robust error handling and user notifications to ensure reliability.
Key Learnings
- •Full-Stack Architecture:Understood the complete workflow from database design to UI components, and how different layers communicate.
- •RESTful API Design:Learned to design and implement APIs, handle different HTTP methods, and structure endpoints logically.
- •Database Modeling:Designed MongoDB schemas for users, accounts, and transactions. Learned about relationships and data validation.
- •React State Management:Mastered useState, useEffect, and component lifecycle. Learned to manage complex state across the application.
- •Authentication & Security:Implemented JWT-based authentication, learned about password hashing, and securing API endpoints.
- •Modern Deployment:Deployed to Vercel, learned about environment variables, production builds, and continuous deployment workflows.
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