Resource expansion (embed related data) in Rest API - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is resource expansion in REST APIs?

Resource expansion means including related data inside the main resource response, so clients get all needed info in one request.

beginner

Why use resource expansion instead of multiple API calls?

It reduces the number of requests, making apps faster and simpler by sending related data together.

intermediate

How can resource expansion be requested in an API call?

Often by adding query parameters like ?expand=relatedResource to tell the server to include related data.

beginner

What is a common format for embedded data in REST API responses?

Embedded data is usually included as nested JSON objects inside the main resource's JSON response.

intermediate

What is a potential downside of resource expansion?

Including too much data can make responses large and slow, so balance is important.

What does resource expansion do in a REST API?

A Includes related data inside the main resource response

B Deletes related resources automatically

C Splits data into multiple API calls

D Encrypts the resource data

Resource expansion means embedding related data inside the main response.

Which query parameter is commonly used to request resource expansion?

A sort=relatedResource

B delete=relatedResource

C filter=relatedResource

D expand=relatedResource

The ?expand= parameter tells the API to include related data.

What is a benefit of resource expansion?

A Increases server load unnecessarily

B Reduces number of API calls

C Hides related data from clients

D Makes data harder to read

Resource expansion reduces the number of calls by sending related data together.

What format is typically used for embedded data in REST API responses?

A CSV files

B XML only

C Nested JSON objects

D Plain text

Nested JSON objects are the common way to embed related data.

What is a risk of including too much expanded data?

A Response size becomes too large and slow

B Data becomes encrypted

C API stops working

D Clients lose access to main resource

Too much embedded data can slow down responses and affect performance.

Explain what resource expansion is and why it is useful in REST APIs.

Think about how you get all info in one request instead of many.

Describe how you would request expanded data from a REST API and what to watch out for.

Consider how to ask the server to include related info.