Q1. What would a blog API structure look like?
Models: User, Post, Comment.
Relationships: User has many posts, Post belongs to User, Post has many comments.
Routes: auth (register/login), posts (CRUD), comments (CRUD).
Authentication for creating posts, public for reading.
Use JWT.
Relationships: User has many posts, Post belongs to User, Post has many comments.
Routes: auth (register/login), posts (CRUD), comments (CRUD).
Authentication for creating posts, public for reading.
Use JWT.
Q2. What would an e-commerce API structure look like?
Models: User, Product, Category, Order, CartItem.
Routes: products (public), categories, cart (protected), orders (protected).
Features: search products, filter by category, add to cart, checkout process.
Authentication and admin roles for product management.
Routes: products (public), categories, cart (protected), orders (protected).
Features: search products, filter by category, add to cart, checkout process.
Authentication and admin roles for product management.
Q3. How do you handle relationships in database for such projects?
In MongoDB/Mongoose, use references (population) or embedding.
Example: post schema has
For SQL, use foreign keys and joins.
Mongoose:
In SQL:
Example: post schema has
userId referencing User.For SQL, use foreign keys and joins.
Mongoose:
Post.find().populate('user').In SQL:
SELECT * FROM posts JOIN users ON posts.userId = users.id.Q4. How would you implement pagination for listing endpoints?
Accept query parameters:
Calculate
For Mongoose:
For SQL:
Return pagination metadata: total pages, current page, hasNext.
page and limit.Calculate
skip = (page - 1) * limit.For Mongoose:
.find().skip(skip).limit(limit).For SQL:
LIMIT limit OFFSET skip.Return pagination metadata: total pages, current page, hasNext.
Q5. How would you structure the frontend for these projects?
For a full-stack project, you might use React/Vue for frontend.
The Express API serves JSON.
Frontend handles UI, state management, and makes API calls.
Alternatively, you could use server-side rendering with EJS if you want a traditional web app.
The Express API serves JSON.
Frontend handles UI, state management, and makes API calls.
Alternatively, you could use server-side rendering with EJS if you want a traditional web app.