Implementation of Message Bus C# microservices

Question

We have few micro services created in .net core 1.0, we are following CQRS pattern and we are also using swagger which list all api's, we have a requirement were in we need to implement Message Bus(not decided yet might be AWS), this message bus will orchestrate UI operations, that spans across multiple backend services, so I don't know how to start because I 'm new to this, I need to understand message bus, queues, publishing events to message bus so could you please help me to understand? Also any pointers to tutorial videos and so on with explanation would be helpful.

Answer 1

In a microservice architecture, Services should not communicate with each other in a synchronous way, instead, all services need to communicate via Message-Brocker. There are lots of messages brokers like RabbitMq, Kafka and so on which you can use them.

Using a message broker directly needs to manage all of the details related to message brokers' behaviors and need lots of code to do that. So here Service-Bus comes to the story.

The service bus is an intermediate between each service and message broker to encapsulate all details and configurations in the Message broker. So microservice blocks (each bounded context in DDD) could communicate with each other simply and in a high-level manner.

The point is in the service bus you just get rid of message broker complexities. So you don't need to worry about low-level concepts like the type of exchanges, queues, and so on in message broker. I just have tried to give you high-level information, But in fact, Message Bus could do lots of other things.

Answer 2

You would read this topic from Maira Wenzel at Microsoft. It helped me a lot on my beginning days.

An event bus allows publish/subscribe-style communication between microservices without requiring the components to explicitly be aware of each other