Related resource links in Rest API - Cheat Sheet & Quick Revision

Recall & Review

beginner

What are related resource links in REST APIs?

Related resource links are URLs provided in API responses that point to other resources connected to the current one. They help clients navigate between related data easily.

beginner

Why use related resource links instead of embedding all data in one response?

Using related resource links keeps responses smaller and faster. It allows clients to fetch only the data they need when they need it, improving performance and flexibility.

intermediate

How are related resource links typically included in REST API responses?

They are often included in a dedicated section like `_links` or `links` in the JSON response, with keys describing the relation and values as URLs to the related resources.

intermediate

What is HATEOAS and how does it relate to related resource links?

HATEOAS (Hypermedia As The Engine Of Application State) is a REST principle where responses include links to related actions or resources, guiding clients through the API dynamically.

beginner

Give an example of a related resource link in a REST API JSON response.

Example: { "_links": { "author": { "href": "https://api.example.com/users/123" } } } means the current resource has a related author resource at the given URL.

What is the main purpose of related resource links in REST APIs?

A To connect related data resources for easy navigation

B To increase the size of API responses

C To embed all data in one response

D To encrypt API responses

Related resource links help clients find and access connected data resources easily.

Where are related resource links commonly found in a REST API JSON response?

A In a dedicated '_links' or 'links' section

B Inside the HTTP headers only

C As part of the URL query parameters

D In the response status code

They are usually included in a '_links' or 'links' section within the JSON body.

Which REST principle emphasizes including related resource links in responses?

A CRUD

B SOAP

C HATEOAS

D OAuth

HATEOAS stands for Hypermedia As The Engine Of Application State and promotes including links in responses.

What is a benefit of using related resource links instead of embedding all related data?

A Less flexible API design

B Slower API responses

C More complex client code

D Smaller response size and on-demand data fetching

Links keep responses small and allow clients to fetch related data only when needed.

In the example { "_links": { "author": { "href": "https://api.example.com/users/123" } } }, what does the 'author' link represent?

A An unrelated external website

B A related resource URL for the author

C The current resource's ID

D The API version number

The 'author' key points to a URL where the related author resource can be found.

Explain what related resource links are in REST APIs and why they are useful.

Think about how APIs help clients find connected data without sending everything at once.

Describe how related resource links are typically structured in a JSON response and how clients use them.

Consider the JSON format and how clients follow URLs to get more info.