Learn GraphQL - Beyond JavaScript/Node.js

#Introduction

GraphQL is a language-agnostic specification — everything you've learned (schema, queries, resolvers, mutations) applies in any language. Episode 48 explores GraphQL beyond JavaScript and the framework of choice in each ecosystem.

We'll look at Python, Java and Kotlin, Go, Ruby, PHP, .NET, and Rust — enough to recognize the patterns and choose the right language for your needs.

#Python GraphQL

#Strawberry and Graphene

Python has two main frameworks. Strawberry is the most modern, built on dataclasses; install with pip install strawberry-graphql:

Strawberry schema

import strawberry
 
@strawberry.type
class User:
    id: strawberry.ID
    username: str
 
@strawberry.type
class Query:
    @strawberry.field
    def user(self, id: strawberry.ID) -> User:
        return User(id=id, username="arman")
 
schema = strawberry.Schema(query=Query)

Graphene is the more established framework with a class-based approach, often used with Django. Ariadne offers a schema-first approach in Python, and FastAPI + GraphQL is popular for modern APIs.

#Java and Kotlin

#GraphQL Java, Spring Boot, and DGS

In the JVM ecosystem, the options:

• GraphQL Java: the reference Java implementation, usually paired with Spring Boot.
• Spring Boot GraphQL: the official integration (spring-graphql), very mature.
• DGS (Domain Graph Service) by Netflix: a code-first framework with codegen, used by Netflix in production.

Spring GraphQL resolver

@Controller
public class UserController {
    @QueryMapping
    public User user(@Argument String id) {
        return userService.findById(id);
    }
}

Kotlin uses the same (JVM) libraries, with more concise syntax.

#Go GraphQL

#gqlgen and graphql-go

gqlgen is the most popular code-first framework in Go — generating code from a schema and very fast:

go run github.com/99designs/gqlgen init

func (r *queryResolver) Users(ctx context.Context) ([]*model.User, error) {
    return r.UserService.List(ctx)
}

graphql-go offers a more low-level approach. Go excels at high performance, and gqlgen enforces schema-first conventions.

#Ruby and PHP

#GraphQL Ruby and Lighthouse

• Ruby: GraphQL Ruby is the standard, integrated with Rails. Class-based schema:

bundle add graphql
rails generate graphql:install

• PHP: Lighthouse for Laravel (schema-first with directives) and GraphQL PHP for other frameworks, plus Symfony integration.

#C# and Rust

#Hot Chocolate and Juniper

• C#/.NET: Hot Chocolate is the most popular GraphQL framework for ASP.NET Core, supporting code-first and schema-first. GraphQL.NET is a more established alternative.

dotnet add package HotChocolate.AspNetCore

• Rust: Juniper for high performance and safety, async-graphql for an async-focused approach.

cargo add juniper

#Choosing a Language

#Practical Considerations

GraphQL brings the same patterns to every language: schema, resolvers, context, batching. What differs is the surrounding ecosystem:

• Python: ideal for data/ML teams that want a GraphQL API on top of Python.
• Go/Rust: the best performance for very high-traffic services.
• Java/.NET: enterprise standards with very mature frameworks.
• Ruby/PHP: natural for Rails/Laravel teams.

Whatever the language, the concepts from the previous 47 episodes — nullability, error handling, pagination, auth, security — apply identically. GraphQL is a portable skill.

#Conclusion

Key takeaways:

• The GraphQL spec is language-agnostic; the core concepts are identical across frameworks.
• Python: Strawberry and Graphene; JVM: Spring GraphQL and DGS.
• Go: gqlgen for fast code-first; Rust: Juniper and async-graphql.
• Ruby: GraphQL Ruby; PHP: Lighthouse; .NET: Hot Chocolate.
• Language choice is driven by the ecosystem and performance needs.
• Your GraphQL skills are portable to any language.

In the next episode, episode 49, you'll learn about success stories and case studies — the journeys of Facebook, GitHub, Shopify, and Airbnb, success metrics like bandwidth reduction and developer productivity, the challenges faced, industry best practices, and ROI analysis. You'll learn from the largest companies' experiences!