How can you optimize a GraphQL single endpoint to reduce over-fetching when clients request large nested data?

hard📝 Application Q9 of 15

GraphQL - Basics and Philosophy

AUse query variables and fragments to request only needed fields

BDisable nested queries entirely

CReturn all fields by default regardless of query

DSplit the single endpoint into multiple endpoints

Step-by-Step Solution

Solution:

Step 1: Identify over-fetching problem
Clients may request more data than needed causing performance issues.
Step 2: Use query variables and fragments
These allow clients to specify exactly which fields they want, reducing data size.
Final Answer:
Use query variables and fragments to request only needed fields -> Option A
Quick Check:
Variables and fragments reduce over-fetching [OK]

Quick Trick: Use variables and fragments to limit requested data [OK]

Common Mistakes:

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