Nested resources in Rest API - Cheat Sheet & Quick Revision

Recall & Review

beginner

What are nested resources in REST APIs?

Nested resources are resources that exist within the context of another resource, showing a parent-child relationship in the URL structure.

beginner

Why use nested resources in REST API design?

They help organize related data clearly, making URLs more meaningful and showing how resources are connected, like comments belonging to a specific post.

beginner

Example of a nested resource URL for comments of a post with ID 5?

/posts/5/comments

intermediate

How does nesting resources affect HTTP methods like GET or POST?

HTTP methods operate on the nested resource within the parent context, for example, GET /posts/5/comments fetches comments for post 5, POST /posts/5/comments adds a comment to post 5.

intermediate

What is a potential downside of deeply nested resources?

Too many nested levels can make URLs long and complex, which can be hard to read and maintain. It's best to keep nesting shallow.

Which URL represents a nested resource for orders of a user with ID 10?

A /orders/users/10

B /orders/10/users

C /users/10/orders

D /users/orders/10

The correct nested resource URL places the parent resource first, then the child: /users/10/orders.

What HTTP method would you use to add a new comment to a post in a nested resource?

A GET

B POST

C DELETE

D PUT

POST is used to create or add new resources, such as a comment under a post.

Why might you avoid very deep nesting in REST API URLs?

A It can make URLs complex and hard to manage

B It improves security

C It makes URLs shorter

D It increases server speed

Deep nesting can make URLs long and complicated, which is hard to read and maintain.

Which of these is NOT a benefit of nested resources?

A Automatically improves database performance

B Makes URLs more meaningful

C Helps organize API endpoints logically

D Shows clear relationship between resources

Nested resources improve URL clarity but do not automatically improve database performance.

In the URL /books/3/chapters/7, what is the parent resource?

A 3

B chapters

C 7

D books

The parent resource is 'books' because chapters are nested inside a specific book.

Explain what nested resources are and give an example URL.

Think about how comments belong to posts in a blog.

Describe one advantage and one disadvantage of using nested resources in REST APIs.

Consider how URLs look and how easy they are to manage.