v16 - latest
GraphQL basics. Start here if you're new to GraphQL :-)
Your GraphQL API has a schema which defines each field that can be queried or mutated and what types those fields are.
How graphql-java fetches data for each of the fields in a query
How to execute a query using the graphql-java engine
How graphql-java maps object data to graphql types
How scalar types work in graphql and how to write your own scalars
How to avoid the dreaded N+1 calls for data and make your graphql system more efficient
Instrumentation allows you to inject code that can observe the execution of a query and also change the runtime behaviours
Graphql subscriptions allow you subscribe to a reactive source and as new data arrives a graphql query is applied over that data and the results are passed on.
Often when executing a query you have two classes of data. The data you need immediately and the data that could arrive little bit later.
How control the visibility of the fields defined in a schema
Outlines the exceptions used in graphql-java
How you can efficiently look ahead at the selected fields lower in the query
graphql-java has support for Relay
How logging is done in graphql-java
Outlines certain application level concerns and how to address them
How SDL Directives can be used to adjust the behavior of your graphql API
Every contribution to make this project better is welcome. Thank you!