Design Microservices Architecture with Patterns and Principles - API Gateway Pattern

The video tutorial explains the API Gateway pattern, which serves as a single entry point for client applications, managing routing to internal microservices and handling cross-cutting concerns like authentication and rate limiting. It compares the API Gateway to the Facade pattern in Object-Oriented design, highlighting its role as a reverse proxy. The tutorial emphasizes the importance of avoiding a single point of failure by splitting the API Gateway into multiple services based on business boundaries. It concludes with a caution against using a single API Gateway for all microservices, recommending segregation to manage complexity effectively.

What is the primary role of an API Gateway in a microservices architecture?

• To serve as a single entry point for client applications

• To store data for microservices

• To directly connect clients to each microservice

• To replace the need for microservices

Which design pattern is the API Gateway pattern similar to?

• Singleton pattern

• Observer pattern

• Facade pattern

• Decorator pattern

How does an API Gateway handle requests from client applications?

• By rejecting requests that are too complex

• By directly executing the requests

• By routing requests to the appropriate internal microservices

• By storing requests for later processing

What is a potential risk of using a single API Gateway?

• Increased security

• Single point of failure

• Improved performance

• Reduced complexity

What is a recommended practice to avoid the risks associated with a single API Gateway?

• Using a single, larger API Gateway

• Splitting the API Gateway into multiple smaller services

• Using a different design pattern

• Eliminating the API Gateway entirely