System Design Sheet

Google System Design Interview

Top system design questions frequently asked in Google interviews. Master these to clear the system design round.

Overall progress

0/119 solved

easy0/11

medium0/54

hard0/54

0/119

Solved

CategoryCompanyDifficultyStatus

Web Services

0/3 solved

Status	Star	Problem	Difficulty	Notes
		Design a URL Shortener (TinyURL / Bit.ly) Asked by:GoogleMetaAmazon+3 more	easy
		Design Pastebin Asked by:GoogleDropboxAmazon+1 more	easy
		Design an Online Judge System (LeetCode) Asked by:LeetCodeHackerRankGoogle+1 more	hard

Infrastructure

0/12 solved

Status	Star	Problem	Difficulty	Notes
		Design an API Rate Limiter Asked by:StripeGoogleAmazon+3 more	easy
		Design a Notification System (Push, Email, SMS) Asked by:AppleMetaAmazon+2 more	easy
		Design a Load Balancer Asked by:GoogleAWSMicrosoft+2 more	easy
		Design a Content Delivery Network (CDN) Asked by:NetflixCloudflareAmazon+1 more	medium
		Design a Distributed Job Scheduler (Quartz / Airflow) Asked by:GoogleNetflixAirbnb+1 more	medium
		Design a Distributed Lock Manager Asked by:UberGoogleAmazon+1 more	medium
		Design a Circuit Breaker Asked by:NetflixMicrosoftGoogle+1 more	medium
		Design a Service Discovery System Asked by:HashiCorpNetflixAWS+1 more	medium
		Design a Backup and Disaster Recovery System Asked by:AWSGoogleMicrosoft+1 more	medium
		Design a Distributed Consensus System (Raft / Paxos) Asked by:GoogleCoreOSHashiCorp+1 more	hard
		Design a Distributed Coordination Service (ZooKeeper) Asked by:GoogleYahooTwitter+1 more	hard
		Design the Kubernetes Control Plane Asked by:GoogleAmazonMicrosoft+2 more	hard

Storage

0/4 solved

Status	Star	Problem	Difficulty	Notes
		Design a Key-Value Store Asked by:AmazonGoogleMeta+1 more	medium
		Design Dropbox / Google Drive (File Storage + Sync) Asked by:DropboxGoogleMicrosoft+1 more	medium
		Design a Blob Storage System (like S3) Asked by:AWSGoogleMicrosoft+1 more	hard
		Design a Relational Database (PostgreSQL) Asked by:GoogleAmazonMicrosoft+1 more	hard

Messaging

0/1 solved

Status	Star	Problem	Difficulty	Notes
		Design an Email Service (like Gmail) Asked by:GoogleMicrosoftYahoo+1 more	hard

Search

0/3 solved

Status	Star	Problem	Difficulty	Notes
		Design Google Typeahead / Autocomplete Asked by:GoogleMicrosoftAmazon+1 more	easy
		Design a Search Engine (Google) Asked by:GoogleMicrosoftAmazon	medium
		Design Quora (Q&A Platform) Asked by:QuoraPinterestGoogle+1 more	medium

Realtime Systems

0/4 solved

Status	Star	Problem	Difficulty	Notes
		Design a Shared Calendar System (like Google Calendar) Asked by:GoogleMicrosoftApple	medium
		Design a Live Comments System (like Facebook Live / YouTube Live) Asked by:MetaGoogleTwitch+1 more	hard
		Design Google Docs (Real-Time Collaborative Editing) Asked by:GoogleMicrosoftAtlassian+1 more	hard
		Design a Video Conferencing System (like Zoom) Asked by:ZoomMicrosoftGoogle+1 more	hard

Social

0/2 solved

Media Streaming

0/5 solved

Status	Star	Problem	Difficulty	Notes
		Design a Video Streaming Platform (YouTube / Netflix) Asked by:NetflixGoogleAmazon+1 more	medium
		Design an Image Processing Pipeline Asked by:PinterestSnapInstagram+1 more	medium
		Design a Podcast Delivery Platform Asked by:SpotifyAppleGoogle	medium
		Design a Video Transcoding Pipeline Asked by:NetflixGoogleTwitch+1 more	hard
		Design a Live Streaming Platform like Twitch Asked by:AmazonGoogleMeta+1 more	hard

Commerce Marketplace

0/3 solved

Status	Star	Problem	Difficulty	Notes
		Design a Ticketing System (BookMyShow / Ticketmaster) Asked by:TicketmasterAmazonGoogle	medium
		Design a Review and Rating System Asked by:YelpAmazonGoogle+1 more	medium
		Design a Price Comparison Engine Asked by:GoogleAmazonPayPal	medium

Fintech Payments

0/1 solved

Status	Star	Problem	Difficulty	Notes
		Design a Digital Wallet System Asked by:PayPalBlockGoogle+1 more	hard

Geo Location

0/6 solved

Status	Star	Problem	Difficulty	Notes
		Design a Proximity Server (Yelp / Nearby Friends) Asked by:UberLyftGoogle+2 more	easy
		Design a Ride-Hailing Service (Uber) Asked by:UberLyftGrab+2 more	medium
		Design a Geofencing Service Asked by:UberLyftDoorDash+1 more	medium
		Design Foursquare (Check-ins and Recommendations) Asked by:AirbnbUberFoursquare+1 more	medium
		Design a Map Rendering and Navigation System like Google Maps Asked by:GoogleAppleUber+1 more	hard
		Design an ETA Calculation Service Asked by:UberLyftGoogle+1 more	hard

Data Analytics

0/5 solved

Status	Star	Problem	Difficulty	Notes
		Design a Web Crawler (Googlebot) Asked by:GoogleMicrosoftYahoo	medium
		Design Top K Rankings System (App Store / Amazon Bestsellers) Asked by:AppleAmazonGoogle+2 more	medium
		Design a Trending Topics System Asked by:TwitterByteDanceMeta+1 more	medium
		Design a User Analytics Pipeline (like Google Analytics) Asked by:GoogleMixpanelAmplitude+1 more	hard
		Design a Real-Time Bidding System (Ad Tech) Asked by:GoogleTradeDeskMeta+1 more	hard

Observability Devops

0/5 solved

Status	Star	Problem	Difficulty	Notes
		Design a Distributed Tracing System (like Jaeger / Zipkin) Asked by:UberGoogleNetflix+1 more	medium
		Design an On-Call Escalation System (like PagerDuty / OpsGenie) Asked by:PagerDutyAtlassianMicrosoft+1 more	medium
		Design a Distributed Metrics Aggregation System Asked by:DatadogUberNetflix+1 more	medium
		Design a Feature Flag System Asked by:LaunchDarklyNetflixMeta+1 more	medium
		Design a CI/CD Platform (GitLab CI / GitHub Actions) Asked by:GitLabGitHubCircleCI+2 more	hard

Security Trust

0/3 solved

Status	Star	Problem	Difficulty	Notes
		Design an Authentication and Authorization System (OAuth 2.0/SSO) Asked by:OktaMicrosoftGoogle+1 more	hard
		Design a Content Moderation System Asked by:MetaByteDanceGoogle+1 more	hard
		Design a Secrets Manager & KMS (Vault / AWS Secrets Manager style) Asked by:HashiCorpAWSGoogle+2 more	hard

Machine Learning

0/6 solved

Status	Star	Problem	Difficulty	Notes
		Design an Ecommerce Recommendation System Asked by:AmazonGoogleNetflix+1 more	hard
		Design a Video Recommendation Engine Asked by:NetflixGoogleByteDance	hard
		Design an A/B Testing and Experimentation Platform Asked by:NetflixMetaOptimizely+1 more	hard
		Design an Ad Click Prediction System Asked by:GoogleMetaTradeDesk+1 more	hard
		Design an ML Feature Store Asked by:UberFeastTecton+2 more	hard
		Design a Search Ranking System (Learning to Rank) Asked by:GoogleMicrosoftAmazon+1 more	hard

Ai Applied Systems

0/4 solved

Status	Star	Problem	Difficulty	Notes
		Design an LLM Chat Application (ChatGPT) Asked by:OpenAIAnthropicGoogle+1 more	hard
		Design a Document Q&A Platform (RAG System) Asked by:OpenAICoherePinecone+1 more	hard
		Design an Autonomous Cloud Coding Agent (Devin / SWE-agent) Asked by:CognitionOpenAIAnthropic+2 more	hard
		Design a Multi-Agent Orchestration Platform (LangGraph / Supervisor-Worker) Asked by:OpenAIAnthropicGoogle+2 more	hard

Status	Star	Problem	Difficulty	Notes
		Design a Threaded Discussion Forum (Reddit) Asked by:RedditMetaGoogle+1 more	medium
		Design TikTok (Short Video Platform) Asked by:ByteDanceSnapMeta+1 more	hard