API Design · Middle · Question 5 of 75

How can a REST API let clients load related resources in one request?

1It's impossible; clients must make separate calls
2By always returning every related object
✓Correct answer: With an expansion parameter like ?include=author,comments (JSON:API) or ?expand=customer

Explanation

Expansion avoids chatty clients while keeping default responses small. Limit how deep and how many relations can be included.

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