Question 1

You are designing an event-driven microservices architecture for an e-commerce platform.

When a customer places an order, an 'OrderCreated' message is generated. This message must be processed by three separate downstream microservices: Inventory, Billing, and Shipping.

Requirements:
- Each microservice must receive its own copy of the message.
- If a microservice is temporarily offline, the message must be retained until the service comes back online.
- Messages must be processed in the exact order they were received (FIFO).

Which messaging service should you recommend?

Accepted Answer

Match 'multiple receivers' to Topics/Pub-Sub. Match 'retained if offline' and 'FIFO' to Service Bus.

Question 2

What mistakes do candidates make on this AZ-305 question?

Accepted Answer

Choosing Service Bus Queues. Queues are 1:1; the first service to read the message consumes it, leaving the others with nothing.

How to approach this question

Full Answer

Common mistakes

Practice the full Azure Solutions Architect Expert AZ-305 Practice Exam 5

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