High Level System Design

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  • News Feed (Twitter, X)

  • Rate Limiter

  • Tiny URL (URL Shortener)

  • Video Streaming and Sharing Platform (YouTube, Vimeo)

  • Web Crawler

  • Cloud File Sharing Service (Dropbox, Google Drive)

  • Dating App (Tinder)

  • Hotel Reservation System (Airbnb, Booking.com)

  • Messaging App (WhatsApp, WeChat, Messenger)

  • Notification System

  • Proximity Service (Yelp)

  • Ride Sharing Service (Uber, Lyft)

  • Social Media Platform (Instagram)

  • Ad Click Event Aggregation (Google Ads)

  • Autocomplete System (Google Search)

  • Digital Wallet (Venmo, Cash App)

  • Distributed Cache

  • Distributed Key-Value Store (DynamoDB)

  • Distributed Message Queue

  • Distributed Task Scheduler

  • E-Commerce Platform (Amazon, eBay)

  • Flash Sale System

  • Google Maps

  • Metrics Monitoring and Alerting (Datadog, Prometheus)

  • Music Streaming Service (Spotify)

  • Payment Gateway (Stripe)

  • Short-Form Video Platform (TikTok, YouTube Shorts)

  • Stock Exchange (NASDAQ, NYSE)

  • Ticket Booking System (Ticketmaster)

  • Top-K Leaderboard