The video tutorial discusses the communication between backend internal microservices, focusing on API gateways and the backend-for-frontend pattern. It highlights the challenges of managing client requests that require multiple microservices and emphasizes the importance of reducing inter-service communication. The tutorial explores synchronous communication over API gateways and the issues of coupling and dependency among microservices, which can undermine the architecture's effectiveness.

What is the primary role of API gateways in microservice architecture?

• To handle database transactions

• To replace microservices with monolithic architecture

• To manage synchronous requests from clients to internal microservices

• To store data for microservices

Why is it important to reduce inter-service communication in microservice architecture?

• To allow more client requests

• To simplify the user interface

• To maintain the power and efficiency of the architecture

• To increase the number of microservices

In what scenario might internal microservice communications be unavoidable?

• When the microservices are independent

• When operations require data from multiple services for immediate response

• When the client requests are simple

• When there is no API gateway

What is a potential drawback of increased dependency and coupling among microservices?

• Improved fault tolerance

• Enhanced data security

• Faster response times

• Loss of microservice architecture power

How does the shopping cart microservice obtain product and price details?

• By storing all data locally

• By sending synchronous requests to product and pricing microservices

• By using asynchronous communication

• By directly accessing the database