Deep dive into the graphql-java library and learn everything about schemas, datafetchers, wirings, etc.

What you'll learn:
Understand the basics of GraphQL (schema, data fetchers)
Know how to write a GraphQL schema using the schema definition language (SDL)
Know how to write and wire DataFetchers
Know how to unit test a GraphQL engine
Know how to expose a GraphQL engine over HTTP using Jetty
Know how to create a DataFetcher for data from an SQL database
Get an in depth understanding of all GraphQL Schema types and how to wire them
Understand how GraphQL schema introspection works
Have in in depth understanding of querying a GraphQL API
Understand how to evolve a GraphQL schema
Understand how to generate all or parts of a schema through code
Know how to extend a GraphQL engine using instrumentations
Understand the execution workflow of a GraphQL query
Know how to optimize performance by using batch loading

Requirements:
Java programming skills is a minimal requirement

https://www.udemy.com/course/learn-graphql-in-java/