Interview Preparation

Ace your system design interview

Structured preparation for FAANG and top-tier tech companies. Study plans, mock interviews, company-specific tracks, and a comprehensive question bank.

Interview Readiness Check

Can you confidently answer these questions? If not, we'll show you exactly what to study.

1

Can you explain the CAP theorem and give real-world examples of CP and AP systems?

2

How would you design a system that handles 100K requests per second?

3

What's the difference between horizontal and vertical scaling?

4

When would you choose eventual consistency over strong consistency?

5

How does consistent hashing work and where is it used?

6

Explain the trade-offs between SQL and NoSQL databases.

7

What caching strategies would you use and when?

8

How would you handle a distributed transaction across multiple services?

Premium feature: Take our full 20-question assessment to get a readiness score and personalized study plan.

Company-Specific Tracks

Each company has a different system design interview style. Prepare with targeted tracks.

Google

L4 (SWE II), L5 (Senior), L6 (Staff)

Dynamic, exploratory. Interviewers push into unknown territory. Expect follow-up constraints.

Key Focus Areas

Distributed systems fundamentalsScalability and performanceData modelingTrade-off analysis

Most Asked Questions

  • • Design YouTube
  • • Design Google Docs
  • • Design Google Maps

Meta

E4, E5 (Senior), E6 (Staff)

Requirements shift mid-interview. They test adaptability. Strong emphasis on scale (billions of users).

Key Focus Areas

News feed systemsReal-time communicationSocial graph at scaleConsistency trade-offs

Most Asked Questions

  • • Design Instagram
  • • Design Facebook Messenger
  • • Design News Feed

Amazon

SDE1, SDE2, SDE3 (Senior), Principal

Customer-obsessed. Start with the customer problem. Leadership principles woven into system design.

Key Focus Areas

E-commerce systemsDistributed databasesEvent-driven architectureAvailability focus

Most Asked Questions

  • • Design Amazon
  • • Design a URL Shortener
  • • Design a Distributed Cache

Netflix

Senior, Staff, Principal

Resilience focused. Chaos engineering mindset. Microservices at extreme scale.

Key Focus Areas

Video streaming infrastructureRecommendation systemsResilience patternsMicroservices

Most Asked Questions

  • • Design YouTube/Netflix
  • • Design a Recommendation Engine
  • • Design a CDN

Study Plan Generator

Tell us when your interview is, and we'll create a day-by-day study plan with specific topics.

Generate study plan (Premium)

Question Bank

Every major system design question reported from interviews at top companies.

Tier 1 — Beginner

URL ShortenerPastebinKey-Value StoreRate Limiter

Tier 2 — Intermediate

TwitterInstagramYouTubeWhatsAppDropboxUber

Tier 3 — Advanced

Google DocsDistributed Message QueueStock ExchangeAd Bidding System

Tier 4 — AI-Era

LLM Inference ServiceRAG PipelineRecommendation SystemFeature Store

Ready to prepare seriously?

Get mock interview mode, full question bank with solutions, and personalized study plans.

View plans →