Shopping cart and session management in HLD - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the main purpose of session management in a shopping cart system?

Session management keeps track of a user's interactions and data (like items in the cart) across multiple requests, ensuring a seamless shopping experience.

intermediate

Explain the difference between server-side and client-side session storage.

Server-side stores session data on the server, offering better security and control. Client-side stores data in the user's browser (like cookies), which is faster but less secure.

beginner

Why is it important to handle session expiration in shopping cart systems?

Session expiration frees up resources and protects user data by ending inactive sessions, preventing stale or abandoned carts from causing confusion or security risks.

beginner

What role does a unique session ID play in session management?

A unique session ID identifies each user's session, linking their requests to their stored data like the shopping cart contents, ensuring data isolation between users.

advanced

How can distributed caching improve shopping cart performance in a large-scale system?

Distributed caching stores session and cart data across multiple servers, reducing database load and speeding up access, which helps handle many users efficiently.

What is the best place to store sensitive session data for a shopping cart?

A In local storage

B In browser cookies

C On the server side

D In URL parameters

Storing sensitive session data on the server side is more secure and prevents exposure to the client.

Which of the following helps maintain a user's shopping cart across multiple visits?

A Session expiration

B Persistent sessions or cookies

C Clearing browser cache

D Using URL rewriting

Persistent sessions or cookies allow the cart to be remembered across visits.

What is a common method to identify a user session in web applications?

A Session ID

B IP address

C User's email

D Browser type

A unique session ID is assigned to each user session to track their data.

Why might a shopping cart system use distributed caching?

A To slow down data retrieval

B To increase server costs

C To store user passwords

D To reduce database load and improve speed

Distributed caching helps reduce database load and speeds up data access.

What happens if a session expires while a user is shopping?

A The cart data is lost unless saved elsewhere

B The user is automatically logged in

C The website crashes

D The session ID changes but data remains

When a session expires, the cart data stored in that session is typically lost unless saved persistently.

Describe how session management works in a shopping cart system and why it is important.

Think about how the system remembers what you put in your cart as you browse.

Explain strategies to scale session management for millions of users in an e-commerce platform.

Consider how to keep sessions fast and reliable when many users shop at once.