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Accordingly, two of the most important Nest app components are controllers and providers. They’re responsible for accepting incoming requests, performing some kind of operation, and returning the response. Meanwhile, providers are extra classes which you can inject into the controllers or to certain providers. We always recommend reading up on providers and controllers to better understand how they work. First, you’ll create a basic application in Nest without using Docker.
We’ll include a dependency-injected service that manages the actual dataset and a RESTful API we can use to list all recipes or recover a single recipe by ID.