You want to optimize a GraphQL query to avoid both over-fetching and under-fetching when fetching user data and their recent posts. Which approach is best?

hard📝 Application Q8 of 15

GraphQL - Basics and Philosophy

ARequest only user ID and fetch posts in a separate query

BRequest user name only and fetch posts later if needed

CRequest all user fields and all post fields in one query

DRequest user name and posts with only titles in one query

Step-by-Step Solution

Solution:

Step 1: Understand the goal
Avoid over-fetching and under-fetching by getting exactly needed data in one query.
Step 2: Evaluate options
Request user name and posts with only titles in one query requests user name and posts with only titles, matching needed data without extras or misses.
Final Answer:
Request user name and posts with only titles in one query -> Option D
Quick Check:
Exact needed fields in one query = Optimal [OK]

Quick Trick: Fetch exactly needed fields in one query to optimize [OK]

Common Mistakes:

Splitting data into multiple queries causing under-fetching
Requesting all fields causing over-fetching
Requesting too few fields causing extra queries

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More GraphQL Quizzes

You want to optimize a GraphQL query to avoid both over-fetching and under-fetching when fetching user data and their recent posts. Which approach is best?

Step 1: Understand the goal

Step 2: Evaluate options

Final Answer:

Quick Check:

Want More Practice?