Examples
Rust GraphQL API
Building a GraphQL API
Rust GraphQL API with async-graphql supports typed queries.
Introduction to GraphQL in Rust
GraphQL is a powerful query language for APIs, developed by Facebook. Unlike REST APIs, GraphQL allows clients to request only the data they need, which can result in more efficient data retrieval. In this guide, we'll explore how to build a GraphQL API in Rust using the async-graphql library.
Setting Up Your Rust Project
First, ensure you have Rust installed on your machine. If not, you can install it from rustup.rs. Next, create a new Rust project:
Open the Cargo.toml file and add the following dependencies:
Creating a Simple GraphQL Schema
Next, you need to define a GraphQL schema. In GraphQL, a schema describes the shape of your data graph and the available operations. Create a new file named schema.rs and add the following:
Implementing the GraphQL Server
To serve the GraphQL API, you'll need a web server. In this example, we'll use the warp web framework. Update your main.rs file to set up the server:
Testing Your GraphQL API
With your server running, you can test your GraphQL API using a tool like Insomnia or Postman. Send a POST request to http://localhost:3030/graphql with the following query:
Conclusion
Congratulations! You've set up a basic GraphQL API using Rust and async-graphql. This is a foundation you can build upon, adding more complex queries, mutations, and subscriptions as needed. Explore the async-graphql documentation for more advanced features.
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