Hands-On RESTful Web Services with ASP.NET Core 3

Creating an in-memory repository

The simplest way to create an in-memory repository is to define a singleton class with a private attribute, which represents a collection of elements. The repository will be initialized as a singleton type; therefore, this specific life cycle guarantees that data will be persistent until the application is restarted.

At this stage, we don't need to use a repository with a real data source because we only need to focus on the HTTP part of our example and not how the data is stored. Later on in this book, we will take a look closer at the data access part.

First of all, we need a model that represents the data we want to store using our repository. Let's create a new folder, called Models, and create a new ...