System Design of Payment Gateway

The UPI system is developed and managed by the National Payments Corporation of India (NPCI), and they may use a combination of proprietary and open-source technologies to ensure robustness, scalability, and security. However, I can provide you with a generalized view of technologies that are commonly used in systems with similar requirements and complexity as UPI: Load Balancer (LB): A load balancer could be used to distribute network traffic across various servers to ensure efficient resource use and maintain high availability. Microservices Architecture: It's common for complex, scalable systems like UPI to adopt a microservices architecture, where different functionalities are encapsulated in independently deployable services. This enables flexibility and can facilitate continuous integration/continuous delivery (CI/CD) practices. Container Orchestration with Kubernetes: Kubernetes is a popular platform for managing containerized applications, providing tools for automating