Pointer Wallet Backend

🌐 Website · 📦 Node Package Manage · 📃Docs

Pointer Wallet Backend is a backend solution for an e-wallet service, developed with Node.js, Express.js, MongoDB, and Redis. It offers essential features such as money transfer, deposit, withdrawal, and payment processing.

📄Features

1. 🔥Transfer: Ensures data integrity by accurately associating each transaction with the intended recipient. It leverages database transactions to manage operations and implements rollback mechanisms for error handling.
2. 💳 Manage Card: Allows customers can add, view, and delete their cards, which can be used for depositing or withdrawing money.
3. 💵 Deposit: Similar to a transfer, the deposit function requires necessary database transactions to ensure data consistency and integrity.
4. 💰 Withdraw: Facilitates withdrawing funds from the wallet securely and efficiently.
5. 🎟 Manage Voucher: Partners can create and edit their own vouchers. Customers will not be able to use these vouchers to apply discounts to their invoices during payment.
6. 📈 Payment: Enables seamless payments from the wallet, integrating with various services. Read more
7. 💶 Connect Wallet: Allows users to connect their wallet to external services or platforms for easy transactions. Read more

💡Security

🥇 JWT Authentication: Utilizes JSON Web Tokens (JWT) for secure access and refresh token management, ensuring that only authorized users can access sensitive operations.

🥈 Transaction Security Code: Each transaction requires a security code, which limits the number of attempts to enter the correct code. Users are notified in case of repeated failed attempts to enhance security.

🥉 Transaction Limit: Implements limits on transfer, deposit, and withdrawal amounts to prevent fraud and unauthorized transactions, ensuring that the system is secure and complies with safety standards.

⚙️Tech Stack

1. 📝 Express.js.
2. 🔧 MongoDB, Redis.
3. 📚 jsonwebtoken (JWT) , crypto, helmet, cookie-parser, node-cron, cloudinary...

💻 Installations

1. Clone the repository

git clone https://github.com/nguynthuhigh/pointer-wallet-be.git

2. Install npm dependencies

cd pointer-wallet-be
npm install

3. Create a .env File

Create a .env file by copying from the .env.example template. Modify this file to configure your environment variables.

View the .env.example here

4. Run the project

npm run dev

🐳 Docker

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Why MongoDB for an E-Wallet Backend?

As this is my first backend project and due to limited experience in system analysis, I chose MongoDB for its flexibility. Despite that, the system ensures ACID compliance in database operations by utilizing transactions and constraints for data consistency.