Design Microservices Architecture with Patterns and Principles - Why Should We Use API Gateway?

The video discusses the importance of using API Gateway in microservices architecture. It highlights challenges faced by client applications in managing communications, handling complex client code, and dealing with strong coupling. The video also covers cross-cutting concerns, protocol exchanges, asynchronous communication requirements, and the need for payload optimization. API Gateway helps centralize these tasks, reducing complexity and improving efficiency.

Why is it difficult for client applications to manage communications with multiple microservices?

• Because managing different protocols like HTTP, GraphQL, and GRPC is complex.

• Because they do not need to communicate with microservices.

• Because they can manage communications with a single protocol.

• Because they can easily handle different protocols.

What is a consequence of having complex client code when interacting with microservices?

• It simplifies the client-side operations.

• It eliminates the need for orchestration.

• It reduces the number of network calls.

• It increases latency and complexity on the UI side.

How does direct communication with microservices affect the client and backend services?

• It makes the client independent of backend changes.

• It reduces the coupling between them.

• It creates strong coupling, making maintenance harder.

• It simplifies the client-side code.

Why is it beneficial to centralize cross-cutting concerns in microservices architecture?

• To make each client application handle these concerns.

• To simplify management and reduce redundancy.

• To ensure each microservice handles its own concerns.

• To increase the complexity of each microservice.

What challenge does asynchronous communication present for client applications?

• It reduces the need for message brokers.

• It simplifies the client-side architecture.

• It complicates the implementation of event-driven models.

• It makes synchronous communication easier.