Design Microservices Architecture with Patterns and Principles - Gateway Aggregation Pattern

The video tutorial explains the API Gateway Aggregation Pattern, which aggregates multiple requests to backend microservices into a single request for the client application. This pattern is beneficial when a client needs to interact with several microservices, reducing network latency and improving performance. However, it introduces potential issues like service coupling and single points of failure. Implementing resilience strategies such as circuit breaking and retry patterns is crucial to mitigate these risks.

What is the primary function of the Gateway Aggregation Pattern?

• To directly connect clients to microservices

• To increase the number of requests to microservices

• To aggregate multiple requests into a single request

• To expose multiple requests to the client

Why might a client application need to make multiple calls to different backend microservices?

• To simplify the client application logic

• To reduce network latency

• To decrease the number of backend services

• To perform a single use case for the customer

How does the Gateway Aggregation Pattern help in reducing network costs?

• By adding more microservices

• By allowing direct access to microservices

• By abstracting complex service communication

• By increasing the number of requests

What is a potential risk of using a gateway in the aggregation pattern?

• It can reduce application performance

• It decreases network latency

• It may introduce a single point of failure

• It simplifies the client application

Which technique is recommended to implement resilience in the API Gateway?

• Reducing the number of client requests

• Using bulkhead, circuit breaking, and retry patterns

• Increasing the number of microservices

• Direct client-to-service communication