Link headers for navigation in Rest API - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of Link headers in REST APIs?

Link headers provide URLs for related resources or navigation, such as next or previous pages, helping clients discover and navigate API data easily.

beginner

How is a Link header formatted in HTTP?

A Link header uses angle brackets for the URL and a rel attribute to describe the link type, for example: ; rel="next".

beginner

What does the rel="next" attribute indicate in a Link header?

It indicates the URL points to the next page or resource in a sequence, guiding clients to fetch subsequent data.

intermediate

Why use Link headers instead of including URLs in the response body?

Link headers separate navigation info from data, keeping responses clean and allowing clients to handle navigation uniformly across APIs.

intermediate

Can multiple links be included in a single Link header?

Yes, multiple links can be included separated by commas, each with its own URL and rel attribute, for example: <url1>; rel="prev", <url2>; rel="next".

What does the Link header with rel="prev" usually represent?

A The current page URL

B The next page URL

C The previous page URL

D The home page URL

The rel="prev" attribute points to the previous page in a paginated sequence.

How are multiple links separated in a single Link header?

A By semicolons (;)

B By spaces

C By new lines

D By commas (,)

Multiple links in a Link header are separated by commas.

Which HTTP header is used to provide navigation links in REST APIs?

A Link

B Content-Type

C Authorization

D Accept

The Link header is used to provide navigation URLs.

What is the benefit of using Link headers for navigation?

A They separate navigation info from data

B They mix data and navigation

C They replace HTTP status codes

D They increase response size

Link headers keep navigation info separate from the main data payload.

Which of these is a valid Link header example?

A https://api.example.com/page2 rel=next

B <https://api.example.com/page2>; rel="next"

C Link: next=https://api.example.com/page2

D rel="next" https://api.example.com/page2

The correct format uses angle brackets for the URL and rel attribute with quotes.

Explain how Link headers help with pagination in REST APIs.

Think about how clients find the next or previous pages.

Describe the syntax and components of a Link header used for navigation.

Focus on how the URL and relationship type are shown.