liquidslr/system-design-notes resource

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14000 stars · 2695 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A collection of study notes summarizing the 'System Design Interview - An Insider's Guide' books (Vol 1 and 2) by Alex Xu. It covers topics like scaling, rate limiting, consistent hashing, and designs for systems such as URL shorteners, chat systems, and payment systems.

Use cases

• prepare for a system design interview
• learn how to scale from zero to millions of users
• understand consistent hashing and rate limiter design
• study how to design a URL shortener or web crawler
• review distributed message queue and object storage design
• get a refresher on back-of-the-envelope estimation

When to choose

• you are preparing for system design interviews and want concise notes on Alex Xu's books
• you want a free, chapter-by-chapter summary of common system design problems
• you need quick reference material on scalability patterns like rate limiting and consistent hashing

When to avoid

• you need a complete, polished textbook rather than work-in-progress notes
• you want hands-on code implementations instead of conceptual notes
• you need deep original content beyond what the books cover

Facets

learning-resource · maturity active

documentation developer-tools developer-tools tutorials microservices backend system-design interview-preparation notes distributed-systems scalability architecture web-server

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