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Walmart System Design Interview Questions

Shaped by Walmart’s customer-obsessed, omnichannel culture where engineers own services from aisle to app, this adaptive roadmap prepares you confidently for Walmart System Design Interviews.

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Overview

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Walmart’s digital and in-store platforms – from the edge inventory systems in 10,750 stores to the e-commerce stack that serves roughly 270 million customers every week – must remain fast and cost-efficient at planetary scale. System Design therefore anchors both daily engineering and the hiring bar. Walmart dedicates a 45-60-minute whiteboard round within the final interview loop to assess how you would architect services such as real-time inventory tracking, order-fulfillment pipelines, or personalized recommendations. Interviewers probe your requirements gathering, capacity estimates, trade-off reasoning, and alignment with the Everyday Low Cost mindset. This adaptive roadmap mirrors the expectations of Walmart hiring managers. You’ll master distributed-systems fundamentals, then tackle Walmart-specific challenges – omnichannel sync, cost-aware architecture, and supply-chain resilience – by applying proven frameworks to every design problem.

Walmart’s digital and in-store platforms – from the edge inventory systems in 10,750 stores to the e-commerce stack that serves ...Show More

WHAT YOU'LL LEARN

A structured playbook for Walmart’s 45–60 minute System Design interview, covering requirement gathering, ball-park sizing, trade-off analysis, and validation.

Reusable design patterns that power inventory visibility, real-time order status, and curbside pickup, including event-sourced updates, region-aware caches, and idempotent APIs.

Techniques for balancing latency, consistency, and cost when blending in-house data centers with public cloud, all while honoring Walmart’s Everyday Low Cost principle.

Scale-hardening tactics to absorb Black-Friday traffic spikes, mitigate hot-SKU partitions, and orchestrate cross-region failovers before they impact shoppers.

Monitoring and alerting practices distilled from Walmart incident retrospectives, helping you surface and resolve issues early.

Straightforward formulas for estimating storage, bandwidth, and compute — skills interviewers expect on every System Design problem.

A structured playbook for Walmart’s 45–60 minute System Design interview, covering requirement gathering, ball-park sizing, trade-off analysis, and validation.

Content

180 Lessons140 Quizzes

System Design Interviews

5 Lessons

Getting Ready for the System Design Interview

Key Concepts to Prepare for the System Design Interview

Resources to Prepare for a System Design Interview

The Do’s and Don’ts of the System Design Interview

Let AI Evaluate your System Design Interview Preparation

Introduction

2 Lessons

Introduction to Modern System Design

Course Structure for Modern System Design

Abstractions

4 Lessons

Non-functional System Characteristics

6 Lessons

Back-of-the-envelope Calculations

2 Lessons

Building Blocks

1 Lessons

Domain Name System

2 Lessons

Load Balancers

3 Lessons

Databases

5 Lessons

10.

Key-value Store

5 Lessons

11.

Content Delivery Network (CDN)

7 Lessons

12.

Sequencer

3 Lessons

13.

Distributed Monitoring

3 Lessons

14.

Monitor Server-side Errors

3 Lessons

15.

Monitor Client-side Errors

2 Lessons

16.

Distributed Cache

6 Lessons

Distributed Cache System

Mock Interview

Premium

17.

Distributed Messaging Queue

7 Lessons

18.

Pub-sub

3 Lessons

Pub-Sub

Mock Interview

Premium

19.

Rate Limiter

5 Lessons

20.

Blob Store

6 Lessons

Blob Store

Mock Interview

Premium

21.

Distributed Search

6 Lessons

22.

Distributed Logging

3 Lessons

23.

Distributed Task Scheduler

5 Lessons

24.

Sharded Counters

4 Lessons

25.

Concluding the Building Blocks Discussion

4 Lessons

26.

Design YouTube

6 Lessons

TikTok

Mock Interview

Premium

27.

Design Quora

5 Lessons

28.

Design Google Maps

6 Lessons

29.

Design a Proximity Service / Yelp

5 Lessons

30.

Design Uber

7 Lessons

Uber Eats

Mock Interview

Premium

31.

Design Twitter

6 Lessons

32.

Design Newsfeed System

4 Lessons

33.

Design Instagram

5 Lessons

NewsFeed

Mock Interview

Premium

34.

Design a URL Shortening Service / TinyURL

6 Lessons

35.

Design a Web Crawler

5 Lessons

36.

Design WhatsApp

6 Lessons

Facebook Messenger

Mock Interview

Premium

37.

Design Typeahead Suggestion

7 Lessons

38.

Design a Collaborative Document Editing Service / Google Docs

5 Lessons

39.

Spectacular Failures

4 Lessons

ChatGPT

Mock Interview

Premium

40.

Concluding Remarks

1 Lessons

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

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Personalized Interview Prep

Skip the LeetCode grind with a custom roadmap that adapts to your goals. Hands-on practice for Coding Interviews, System Design, and more.

Mock Interviews

Test your skills in a simulated interview setting. Receive personalized feedback based on your performance. Available for Coding Interviews, System Design, and more.

AI Prompt

Build prompt engineering skills. Practice implementing AI-informed solutions.

Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

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AI Code Mentor

AI Code Mentor helps you quickly identify errors in your code, learn from your mistakes, and nudge you in the right direction — just like a 1:1 tutor!

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