System Design Nuggets

System Design Nuggets

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Design Zoom in 45 Mins: A Complete System Design Walkthrough
How to Design a Large-Scale Video Conferencing System Like Zoom With WebRTC, Geographic Media Routing, and Real-Time Signaling Explained in Plain…
 • Arslan Ahmad
How to Design Google Maps in 45 Mins: A Complete System Design Interview Walkthrough
What happens when you pinch to zoom, search for 'coffee near me,' or tap 'Start navigation.' Three core flows traced step by step through CDN…
 • Arslan Ahmad
How to Design Slack in 45 Mins
How do 12 million concurrent WebSocket connections deliver messages in under 500ms? The complete architecture: Kafka fan-out, workspace-level sharding…
 • Arslan Ahmad
How to Design a Distributed Lock Service (Chubby/ZooKeeper)
Learn how to design a distributed lock service with a step-by-step breakdown. Includes back-of-the-envelope estimation, high-level architecture, core…
 • Arslan Ahmad
System Design Interview Question: Designing Uber in 45 Mins
Find out the complete 14-step process for designing Uber/Lyft in system design interviews. Covers an architecture that connects riders with drivers in…
 • Arslan Ahmad
How to Design Google Search in 45 Mins
Learn how to design Google search step-by-step in a system design interview. Covers detailed crawling, indexing, and serving workflows and bottlenecks.
 • Arslan Ahmad
How to Design Instagram in 45 Mins
A step-by-step walkthrough of how to design Instagram in a system design interview, covering everything from sizing 500 million daily users to solving…
 • Arslan Ahmad
How to Prepare for System Design Interviews in 2026 (The Only Guide You Need)
Everything you need in one place: core concepts explained for beginners, the interview framework, 8-week study plan, company-specific strategies for…
 • Arslan Ahmad
12 System Design Questions You’ll Almost Certainly Get Asked at Amazon
Amazon’s system design questions reflect their business: e-commerce, AWS, logistics, Prime Video. This guide covers 12 questions with the specific…
 • Arslan Ahmad
URL Shortener System Design: 5 Hidden Depth Areas Google Uses to Separate L4 From L5
The URL shortener is not about the shortener. It is about how deeply you reason about trade-offs when there is no complexity to hide behind. This guide…
 • Arslan Ahmad
System Design Interview Questions: The Only Pattern-Based Reading List You Need (2026)
A pattern-based reading list to replace the overwhelm of system design prep.
 • Arslan Ahmad
System Design Case Study: How to Design a Real-Time AI Content Moderation System at Scale
How do platforms like Facebook and Instagram moderate billions of posts in real time? This system design guide walks through the full architecture from…
 • Arslan Ahmad
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