Netflix System Design Interview Questions
Practice the exact questions companies are asking right now.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Design ad frequency capping
Design a frequency capping system for an advertising platform. The system must ensure that a user does not see the same advertisement more than a conf...
Design Ad Frequency and Order Tracking
Design two ads-platform components. Part A: Frequency capping service. Build a service used during ad decisioning to prevent a user from seeing an ad ...
Design an ad frequency capping system
Design a real-time ad frequency capping system for an ads platform. When the ad server is deciding whether to show an ad, it must enforce caps such as...
Design a File Backup System
Design a scalable file backup system. You are given access to basic file-system primitives such as listing directories, reading file metadata, reading...
Design an Ad Frequency Capping System
Design a frequency capping system for an advertising platform. A frequency cap limits how many times a user can be shown an ad, campaign, line item, o...
Model data for an ads platform
Design a data model (logical schema) for an advertising platform. Include core entities such as: - Business/account (advertiser) - Campaign and budget...
Design an ads audience targeting system
Problem Design an ads audience targeting system that allows advertisers to upload large user lists and then target (or exclude) those users when servi...
Design homepage viewport rendering with deduplication
Design the backend + client interaction to support viewport rendering for a streaming service’s home page (rows of videos/tiles). Scenario - The home ...
Model ads demand data for reporting
You are asked to design the data model (and supporting pipelines at a high level) to represent ads demand for an ads platform. “Demand” here refers to...
Design Rolling-Window Ad Frequency Capping
Design a frequency-capping service for an advertising platform. The ad platform receives ad requests for users and must decide whether a candidate ad,...
Design an ad frequency capping system
Design a frequency capping system for an ads platform. An ad server must decide, for each ad impression opportunity, whether showing an ad would viola...
Model data for an ads platform
Problem Design a data model for an online advertising system that supports creating ads and analyzing delivery/performance. Core product needs The sys...
Design ads frequency capping service
Design an Ads Frequency Capping Service Context You are designing a service that ensures a user does not see the same ad creative or campaign more tha...
Design Netflix viewport deduplication
Design an Algorithm to Ensure No Duplicates in the First Netflix Home-Page Viewport Context You are rendering a Netflix-style home page composed of mu...
Design an ad frequency capping system
System Design: Ads Frequency Capping You are designing an ad-serving platform (e.g., for a streaming service with ads). The product requires frequency...
Design a React video playlist
React Video Playlist Component — Design and Implementation Context You are asked to design and implement a React video playlist component that: - Rend...
Model advertiser intake database schema
Advertiser Intake and Campaign Data Model (F1-style) Context You are designing a multi-tenant advertiser intake and campaign configuration system. The...
Design config rollout and click aggregation
The system design rounds included two prompts: 1. Global configuration deployment - Design a system that allows engineers to publish configuration ...
Design an ads data model
System Design / Data Modeling: Ads Data Model Design the data model (logical schema) for an ads platform that supports: - Advertisers creating campaig...
Design a crash-resilient file system
Prompt Design a resilient file system that can recover file contents correctly after a system crash (e.g., power loss / kernel panic). The interviewer...