Scalable-Online-Payment-Microservice

A backend service designed to handle online transactions with scalability in mind. It supports secure payment processing, integrates with various payment gateways, and ensures high availability. Ideal for e-commerce platforms and businesses needing reliable payment solutions.

Features

• Scalable Payments: Handles a large volume of transactions simultaneously with low latency.
• Multiple Payment Gateways: Supports integration with Paypal as a payment provider.
• Transaction Management: Allows tracking and managing payments, refunds, and chargebacks.
• Secure Transactions: Utilizes encryption and tokenization for secure data handling.
• Real-Time Processing: Provides real-time updates on payment status.
• Multi-Currency Support: Supports multiple currencies for global transactions.

Technologies Used

• Backend Framework: Spring Boot (Java)
• Database: Oracle Database (Oracle XE or other versions)
• Payment Gateways: Stripe, PayPal, or any other provider (integration support)
• JDBC Driver: Oracle JDBC Driver ('ojdbc8.jar')
• Authentication: JWT for secure API access
• API Documentation: Swagger/OpenAPI
• Caching: Redis for faster transaction queries (optional)
• Messaging Queue (optional): Kafka or RabbitMQ for transaction event processing

Set Up the Environment

1. Install Oracle XE (or any other Oracle version):

   • Download from Oracle XE Downloads.

2. Configure Database:

   • Set up the database schema for payment transactions.
   • Example connection URL:
     '''env DATABASE_URL=jdbc:oracle:thin:@localhost:1521:xe '''

3. Set up the environment variables:

   • Create a '.env' file or set system environment variables for the Oracle database connection and payment gateway credentials:
     '''env DATABASE_URL=jdbc:oracle:thin:@localhost:1521:xe DB_USERNAME=your_username DB_PASSWORD=your_password PAYMENT_GATEWAY_KEY=your_payment_gateway_api_key REDIS_URL=redis://localhost:6379 # optional JWT_SECRET_KEY=your_jwt_secret_key '''

4. Add Oracle JDBC Driver:

   • Ensure you have the Oracle JDBC Driver ('ojdbc8.jar') in your classpath or add it as a dependency in 'pom.xml' if using Maven:
     '''xml com.oracle.database.jdbc ojdbc8 19.8.0.0 '''

5. Payment Gateway Integration:

   • Ensure you have API keys from the payment gateways (e.g., Stripe, PayPal) for integration.

6. Run the Application:

   • To start the Spring Boot application:
     '''bash mvn spring-boot:run '''

Usage

• Start the API server using Spring Boot:
  '''bash mvn spring-boot:run '''
• Access the API documentation at:
  ''' http://localhost:8080/swagger-ui.html '''

Endpoints

Endpoint	Method	Description
'/payments/initiate'	POST	Initiate a new payment transaction.
'/payments/status/{id}'	GET	Check the status of a payment by transaction ID.
'/payments/refund/{id}'	POST	Process a refund for a transaction.
'/payments/chargeback/{id}'	POST	Process a chargeback for a payment.
'/payments/reports'	GET	Generate reports on payments and transactions.

Contributing

Contributions are welcome! Please fork the repository and submit a pull request with detailed notes.

License

This project is licensed under the MIT License.

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For more information, contact jerry.felipe@gmail.com.