Design Microservices Architecture with Patterns and Principles - Multiple-Receiver Message-Based Communication (One-to-M

The video tutorial explains message-based communication, focusing on the one-to-many topic model and the publish-subscribe mechanism. It highlights the role of event buses and message broker systems like Kafka and RabbitMQ in asynchronous communication. The tutorial provides examples of event-driven communication, such as price changes in microservices, and compares synchronous and asynchronous communication methods. Future topics like CQRS and event storming are introduced for further exploration.

What is the primary characteristic of the one-to-many topic model in message-based communication?

• It is dependent on the publisher knowing the subscribers.

• It allows multiple receivers to consume messages.

• It involves a single receiver.

• It requires synchronous communication.

In publisher-subscriber systems, how are messages made available to subscribers?

• Messages are sent directly to each subscriber.

• Messages are stored in a queue for each subscriber.

• Messages are stored in a topic accessible to all subscribers.

• Messages are deleted immediately after being read by one subscriber.

Which of the following is NOT a well-known example of a publish-subscribe message broker system?

• Amazon SNS

• RabbitMQ

• HTTP

• Kafka

How does asynchronous communication benefit microservices when a client does not require an immediate response?

• It decouples microservices, allowing them to operate independently.

• It requires the use of RESTful APIs.

• It allows for synchronous communication.

• It increases dependency between microservices.

What is an example of an event that might trigger asynchronous communication in a microservice architecture?

• A user logging into a system.

• A server reboot.

• A database backup.

• A price change in a product microservice.