go-graphql

To prevent N+1 queries in a Go GraphQL API, use per-request DataLoaders to batch and cache database or microservice calls. This ensures resolver functions fetch data in a single round trip rather than querying per item.

Choosing between gqlgen and graph-gophers depends on schema size, build workflow, and federation needs. Gqlgen typically offers stronger schema-first code generation, while graph-gophers provides a struct-based approach for different scaling requirements.

Handle errors safely in Go GraphQL resolvers by enforcing error sanitization before returning responses. This prevents internal system details from leaking to clients while maintaining proper nullability rules for predictable schema behavior.

Apply schema-first design to a Go GraphQL API by defining types and mutations before implementing resolvers. This approach enforces correct nullability, pagination patterns, and mutation envelopes to keep business logic out of transport code.

Yes, Go GraphQL supports query complexity limits and subscription lifecycle management. You can configure query depth and complexity thresholds to prevent resource exhaustion and use context-aware subscriptions for safe real-time data delivery.

Keep Go GraphQL resolvers thin to separate business logic from transport code. Thin resolvers delegate data fetching to dedicated services or DataLoaders, making your schema easier to maintain, test, and refactor over time.