Wallet Application:

Project Description

This application allows users to create wallets, manage funds, and perform transactions. It also features the creation and management of virtual currencies, enabling users to have a flexible and customizable financial experience.

Technology Stack

• Backend: Java (Spring Boot)
• Database: PostgreSQL (or similar relational database)
• Cloud Platform: AWS, Azure, or GCP (your choice)
• Additional Considerations:
  • Security: Implement security measures like authentication and authorization.
  • Scalability: Design the application to handle a large number of users and transactions.
  • Testing: Write comprehensive unit and integration tests.
  • Documentation: Provide clear and concise documentation for developers and users.

Microservice Architecture

The application will be broken down into independent microservices for better maintainability and scalability. Here are some potential microservices:

• User Service: Handles user registration, authentication, and authorization.
• Wallet Service: Manages wallet creation, configuration, and balance updates.
• Transaction Service: Processes transactions between wallets and handles currency conversion.
• Virtual Currency Service: Enables users to create and manage virtual currencies.

User Flows

The following user flows illustrate typical interactions within the application:

1. User Registration and Wallet Creation

• User registers for an account.
• User creates their first wallet.

2. Add Funds to Wallet

• User selects their wallet.
• User enters the amount to add.
• User confirms the transaction.
• Wallet balance is updated with the added funds.

3. Withdraw Funds from Wallet

• User selects their wallet.
• User enters the withdrawal amount.
• User confirms the transaction.
• Wallet balance is updated with the withdrawn funds.

4. Transfer Funds Between Wallets

• User selects the sending wallet.
• User selects the receiving wallet.
• User enters the transfer amount.
• User confirms the transaction.
• Sending wallet balance decreases.
• Receiving wallet balance increases.

5. Create Virtual Currency

• User selects their wallet.
• User enters the virtual currency details (name, symbol).
• User confirms creation.
• New virtual currency is associated with the user's wallet.

6. Configure Wallet Currency

• User selects their wallet.
• User chooses the currency type (virtual or real-world).
• User selects the specific virtual currency (if applicable).
• User confirms the configuration.
• Wallet configuration is updated with the chosen currency.

7. Convert Between Currencies

• User selects their wallet.
• User chooses the source currency (virtual or real-world).
• User chooses the target currency (virtual or real-world).
• User enters the amount to convert.
• User confirms the conversion.
• Wallet balance is updated with the converted funds.

8. View Transaction History

• User selects their wallet.
• Transaction history for the wallet is displayed.

9. View Wallet Balance

• User selects their wallet.
• Current balance of the wallet is displayed.

Next Steps

This README provides a high-level overview of the project. Future steps include:

• Detailed API design for each microservice.
• Database schema design.
• Implementation of backend functionalities.
• Design and development of the frontend application (optional).

By following this approach, we can build a robust and scalable wallet application that meets the needs of our users.