How can I use GraphQL data sources in Gatsby?

How can I use GraphQL data sources in Gatsby?

You can use GraphQL data sources in Gatsby by defining them in your gatsby-config.js file and creating queries.

What types of data sources can I use?

You can use various data sources like REST APIs, Markdown files, and databases such as MongoDB or PostgreSQL.

Can you give me an example of a GraphQL query?

Sure! Here's a simple query to fetch all blog posts: query { allMarkdownRemark { edges { node { frontmatter { title } } } } }.

How do I handle authentication for my data sources?

You can handle authentication by using environment variables to store your API keys and including them in your requests.