.NET Core Microservices - Use Queue for Checkout Message

The video tutorial demonstrates how to transition from using a topic and subscription model to a simple queue model in an application. It covers the process of creating a basic queue, testing the application by placing a new order, and configuring the consumer to listen to the queue instead of a topic. The tutorial also explains how to set up a processor for the checkout queue and includes debugging steps to ensure the application functions correctly. The video concludes by highlighting the minimal code changes required for this transition.

What steps were taken to ensure the application was using both queue and topic?

Describe the scenario where using a topic and subscription is necessary instead of a queue.