gqlgen

What gqlgen is

gqlgen is a free Go library for building GraphQL servers. Developers define a schema in GraphQL Schema Definition Language, then use code generation for models and server runtime code. The project emphasizes type safety and aims to avoid map[string]interface{} in the workflow. Its listed operations include queries, mutations, and subscriptions, and it supports federation. Developers can bind schema types to custom Go models and generate explicit field resolvers. Documentation recipes cover Apollo Federation, authentication, CORS, Gin, and subscriptions; the authentication approach passes details through context. The getting-started guide runs the generated server with go run server.go and opens it at localhost:8080. gqlgen includes project scaffolding, custom templates, schema-to-code generation, and a CLI. It is self-hosted, and Go is its supported language and server language. The project directs users to raise a GitHub issue for bugs or unexpected behavior. One configuration limitation is that user-configurable directives are not supported for scalar, enum, interface, or union types.