📋 All 45 Questions
01Distributed Metrics Logging & Aggregation
02Distributed Stream Processing System (like Kafka)
03Key-Value Store
04Top K Most Shared Articles in Time Windows
05API Rate Limiter
06Collect Performance Metrics from Thousands of Servers
07Google Calendar
08Distributed Queue (like RabbitMQ)
09Google Analytics — User Analytics Dashboard
10Sorting Large Data Sets
11Top K Elements — App Store Rankings / Amazon Bestsellers
12Dropbox / Google Drive
13Distributed Job Scheduler
14Notification Service at Scale
15Surge Pricing System (Uber)
16Netflix — Limit Concurrent Screens
17ETA Service & Location Sharing (Uber)
18Hotel Booking System
19A/B Testing System (Optimizely)
20Price Alert System (Amazon / Stock Prices)
21IoC / Dependency Injection Framework
22Credit Card Processing System
23Count Facebook Likes (High-Profile Users)
24Control Plane for Distributed Database
25User Login & Authentication System
26Weather Application
27Collaborative Document System (Google Docs / Notion)
28Facebook Marketplace
29Monitor Health of a Cluster
30Find a Rider/Driver (Uber Dispatch)
31Distributed Tracing System
32Distribute 6M Free Burgers in 1 Hour
33File Downloader Library
34View Latest Stock Prices Worldwide
35Photo Sharing Platform (Flickr / Google Photos)
36On-Call Escalation System
37Wire Transfer API
38Live Comments Feature (Facebook)
39Count Users Viewing a Page
40Facebook Likes with Live Updates
41Migrate Large Data to Google Cloud
42Distributed Botnet (Defense-Focused)
43Distributed File Transfer (BitTorrent)
44Parts Compatibility for eCommerce
45Ads Management & Display System
01Distributed Metrics Logging & Aggregation
02Distributed Stream Processing System (like Kafka)
03Key-Value Store
04Top K Most Shared Articles in Time Windows
05API Rate Limiter
06Collect Performance Metrics from Thousands of Servers
07Google Calendar
08Distributed Queue (like RabbitMQ)
09Google Analytics — User Analytics Dashboard
10Sorting Large Data Sets
11Top K Elements — App Store Rankings / Amazon Bestsellers
12Dropbox / Google Drive
13Distributed Job Scheduler
14Notification Service at Scale
15Surge Pricing System (Uber)
16Netflix — Limit Concurrent Screens
17ETA Service & Location Sharing (Uber)
18Hotel Booking System
19A/B Testing System (Optimizely)
20Price Alert System (Amazon / Stock Prices)
21IoC / Dependency Injection Framework
22Credit Card Processing System
23Count Facebook Likes (High-Profile Users)
24Control Plane for Distributed Database
25User Login & Authentication System
26Weather Application
27Collaborative Document System (Google Docs / Notion)
28Facebook Marketplace
29Monitor Health of a Cluster
30Find a Rider/Driver (Uber Dispatch)
31Distributed Tracing System
32Distribute 6M Free Burgers in 1 Hour
33File Downloader Library
34View Latest Stock Prices Worldwide
35Photo Sharing Platform (Flickr / Google Photos)
36On-Call Escalation System
37Wire Transfer API
38Live Comments Feature (Facebook)
39Count Users Viewing a Page
40Facebook Likes with Live Updates
41Migrate Large Data to Google Cloud
42Distributed Botnet (Defense-Focused)
43Distributed File Transfer (BitTorrent)
44Parts Compatibility for eCommerce
45Ads Management & Display System

System Design Interview Guide

45 questions · Google, Amazon, Facebook, Uber, Stripe, Bloomberg & more
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⚡ Design Decisions

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