API Gateway

Design And Requirements

Architecture Diagram

Components Overview

1. Middleware Service
   Handles common operations like authentication, authorization, caching, and data transformations.

2. Path Customization Service
   Manages dynamic routes and URIs based on user or request type.

3. Policy Enforcement Engine
   Enforces system rules, including access control, rate limiting, and data validation.

4. Virtual Endpoint Registry
   Manages virtual endpoints representing backend microservices, simplifying routing.

5. Request Dispatcher
   Analyzes incoming requests and directs them to the appropriate backend service.

6. Request Handler Service
   Prepares and processes incoming requests, ensuring they are ready for backend services.

7. OAuth2 Service
   Manages dynamic credentials and secure authentication flows using Spring Authorization Server.

8. Event Gateway Proxy
   Handles asynchronous communication, such as logging, event subscriptions, and statistics.

9. API Gateway Controller
   Serves as the entry point for all API requests, handling validation and routing.

10. Backend Microservices
    Independent services responsible for executing specific business logic.

11. Endpoint Discovery Service
    Facilitates automatic discovery of backend services, enabling dynamic updates to the gateway.

How to Use