.NET Core Microservices - Order Repository Interface

The video tutorial guides viewers through creating a repository and interface for an orders API. It covers defining methods for adding orders and updating payment status, implementing the order repository interface, and configuring the DB context as a Singleton for use with Azure service bus.

What methods could be created to retrieve orders for a user, and why are they not implemented in this course?

Why is the order repository registered as a Singleton object?