GraphQL API Design Best Practices

# GraphQL API Best Practices

## Schema Design
- Use meaningful type names
- Implement proper relationships
- Define clear input types
- Use interfaces and unions

## Resolvers
- Keep resolvers thin
- Implement DataLoader for batching
- Handle errors gracefully
- Use field-level caching

## Security
- Implement query depth limiting
- Add query complexity analysis
- Use persisted queries
- Implement proper authentication

## Performance
- Enable automatic persisted queries
- Use DataLoader for N+1 prevention
- Implement field-level caching
- Monitor query performance