GraphQL - Resolvers
You want to optimize a GraphQL query that fetches a list of books with authors. How can default resolvers help reduce custom code?
You want to optimize a GraphQL query that fetches a list of books with authors. How can default resolvers help reduce custom code?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand default resolver benefits
Default resolvers automatically resolve fields by matching parent object keys, reducing the need for custom resolver code.Step 2: Evaluate optimization options
By automatically resolving fields that match parent object keys without writing resolvers correctly describes this benefit. Options A and B describe batching and caching which default resolvers do not do. By requiring explicit resolver functions for nested fields is opposite to reducing custom code.Final Answer:
By automatically resolving fields that match parent object keys without writing resolvers -> Option AQuick Check:
Default resolvers reduce code by auto-resolving matching fields [OK]
Quick Trick: Default resolvers reduce code by auto-resolving matching fields [OK]
Common Mistakes:
- Confusing default resolvers with caching or batching features
- Thinking default resolvers require explicit functions for nested fields
- Assuming default resolvers optimize database calls
Master "Resolvers" in GraphQL
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