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Combining Data Sources Using GraphQL

In this chapter, you will be introduced to GraphQL, a service technology that provides a more modern approach to combining data from various sources and then providing a standard way to query that data.

This chapter will cover the following topics:

  • Understanding GraphQL
  • Building a service that supports GraphQL
  • Defining GraphQL queries for EF Core models
  • Building .NET clients for a GraphQL service
  • Implementing GraphQL mutations
  • Implementing GraphQL subscriptions

Understanding GraphQL

In Chapter 8, Building and Securing Web Services Using Minimal APIs, you learned how to define a Web API service by mapping request path endpoints to lambda expressions or methods that return the response. Any parameters ...

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