Gateway Service
The Gateway Service is a microservice built with Spring Boot that serves as the entry point for all client requests to the microservices architecture. It routes incoming requests to the appropriate microservices, providing a unified interface for clients.
Key Features
Request Routing: Directs incoming requests to the appropriate microservice based on the request path or other criteria.
Load Balancing: Distributes incoming requests across multiple instances of the same service.
Authentication and Authorization: Verifies user identity and permissions before forwarding requests.
Rate Limiting: Prevents abuse by limiting the number of requests from a single client.
Circuit Breaking: Prevents cascading failures by detecting and isolating failing services.
Request/Response Transformation: Modifies requests and responses as needed (e.g., adding headers, transforming data formats).
Logging and Monitoring: Tracks all incoming requests for monitoring and debugging purposes.
Benefits
Simplified Client Interface: Clients only need to know about a single endpoint.
Cross-Cutting Concerns: Centralizes common functionality like authentication and logging.
Reduced Client-Service Coupling: Changes to the service landscape don't require client changes.
Enhanced Security: Provides a single point for implementing security measures.
Improved Performance: Enables caching and request aggregation.
Integration with Other Services
Works with the Registry Service for dynamic service discovery
Integrates with the Authentication Service for security
Communicates with all other microservices to route requests
Technologies
Spring Boot
Spring Cloud Gateway or Netflix Zuul
Spring Security
RESTful APIs
Docker for containerization