Sturdy Payment Gateway Backend API Integrated with Razorpay and Stripe

Create and put into use a scalable, secure backend API that works with Razorpay and Stripe to manage complete payment processing. The following characteristics ought to be present in the API:

• Workflows for both gateways’ payment initiation and verification
• Webhooks (such as payment success, failure, and refunds) are handled and validated securely.
• thorough transaction recording (containing metadata, timestamps, and status)
• Error management and retry procedures for incomplete or unsuccessful transactions
• Environment configuration support (test and live modes)
• Appropriate authorization and authentication for API endpoints
• Design of database schemas for transaction and payment records

Make sure the solution adheres to best practices for performance, maintainability, and security (such as secret management and signature validation). Give precise definitions of API endpoints, formats for requests and responses, and examples of implementation code.