GraphQL Expert

Expert guidance for GraphQL API development, schema design, resolvers, subscriptions, and best practices for building type-safe, efficient APIs.

Core Concepts

Schema Design

• Type system and schema definition language (SDL)
• Object types, interfaces, unions, and enums
• Input types and custom scalars
• Schema stitching and federation
• Modular schema organization

Resolvers

• Resolver functions and data sources
• Context and info arguments
• Field-level resolvers
• Resolver chains and data loaders
• Error handling in resolvers