liquidslr/system-design-notesPublic

Notes of the book System Desgin Interview - An Insider's Guide

AI summary: A comprehensive collection of notes and resources for mastering system design interviews.

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No licenseCreated Dec 24, 2024Last push 2mo ago+400 stars this week+5.7K this month

Quick answers

What is system-design-notes?
A comprehensive collection of notes and resources for mastering system design interviews.
What does system-design-notes do?
System Design Notes is an extensive repository compiling knowledge, architectures, and strategies for tackling software system design challenges. It covers fundamental concepts such as scalability, load balancing, caching, and database replication. The repository includes detailed analyses of real-world architectures from major tech companies, illustrating how theoretical concepts are applied in practice. It provides structured frameworks for approaching open-ended interview questions and evaluating trade-offs. The resource is continuously updated by the community, serving as a living document for engineering best practices.
Who is system-design-notes for?
Software engineers preparing for technical interviews. It is also highly valuable for junior and mid-level developers looking to improve their system design skills and architectural knowledge.
How do I get started with system-design-notes?
git clone https://github.com/liquidslr/system-design-notes.git
How popular is system-design-notes on GitHub?
liquidslr/system-design-notes has 27,004 stars and 4,982 forks on GitHub, and gained 400 stars in the last 7 days.

Star history

since Sep 9, 2026
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27K stars as of Oct 25, 2026. Measured daily since Sep 9, 2026; GitHub no longer exposes earlier star timestamps.

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18 commits in the last yearLessMore

Signals and awards

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  • Widely adopted

    27,004 stars

  • Repeat trending

    5 trending appearances

What system-design-notes does

System Design Notes is an extensive repository compiling knowledge, architectures, and strategies for tackling software system design challenges. It covers fundamental concepts such as scalability, load balancing, caching, and database replication. The repository includes detailed analyses of real-world architectures from major tech companies, illustrating how theoretical concepts are applied in practice. It provides structured frameworks for approaching open-ended interview questions and evaluating trade-offs. The resource is continuously updated by the community, serving as a living document for engineering best practices.

Software engineers preparing for technical interviews. It is also highly valuable for junior and mid-level developers looking to improve their system design skills and architectural knowledge.

  • Fundamental concepts: Covers core distributed systems topics like CAP theorem, consistent hashing, and consensus algorithms thoroughly.
  • Real-world architectures: Analyzes the intricate design of large-scale systems like Netflix, Twitter, and Uber.
  • Interview frameworks: Provides clear, structured approaches for tackling complex, open-ended system design questions.
  • Component deep-dives: Details the technical specifics of various databases, message queues, and distributed caching layers.
  • Trade-off analysis: Emphasizes rigorously evaluating the pros and cons of different architectural decisions and patterns.
  • Community driven: Continuously updated with robust new resources, examples, and valuable community contributions.

Where teams use it

Interview preparation

Study comprehensive materials to rigorously prepare for software engineering system design interviews.

Architecture reference

Consult established best practices and design patterns when architecting robust new software systems.

Skill development

Deepen foundational understanding of distributed systems and modern scalability concepts.

Team training

Use the detailed materials as a basis for engineering team discussions on complex system architecture.

Getting started: git clone https://github.com/liquidslr/system-design-notes.git

README

main branch

These notes are based on the System Design Interview books - Vol 1 and Vol 2 2nd Ed

Check the notes here: https://pagefy.io/system-design/system-design-interview-by-alex-xu

Note: These notes are a work in progress.

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Who is committing

last 52 weeks
Maintainer commits17 (89%)
Community commits2 (11%)

19 commits in total over the last year.

DateListRankStars gained
Oct 9, 2026daily#6+398
Oct 8, 2026daily#6+398
Sep 11, 2026daily#5+1,397
Sep 10, 2026daily#5+1,397
Sep 9, 2026daily#7+910
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