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System Design Cheat Sheets

$39

Walk into the system-design round knowing exactly what to draw. 50+ architecture diagrams — load balancers, caches, databases, queues — plus full walkthroughs of URL shortener, chat, and newsfeed systems.

🏷 v1.0.0
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✓ Instant download✓ Lifetime updates✓ MIT licensed✓ MIT license✓ Secure checkout (Stripe)

📁 File Structure 37 files

system-design-cheatsheets/
├── LICENSE
├── README.md
├── cheatsheets/
│ ├── common-tradeoffs.md
│ ├── estimation-cheatsheet.md
│ ├── interview-framework.md
│ ├── scaling-patterns.md
├── free-sample.zip
├── fundamentals/
│ ├── api-design.md
│ ├── caching-strategies.md
│ ├── cdn-and-dns.md
│ ├── consistency-patterns.md
│ ├── databases.md
│ ├── load-balancers.md
│ ├── message-queues.md
│ ├── networking.md
│ ├── security-fundamentals.md
│ ├── storage-systems.md
├── guide/
│ ├── 01-overview.md
│ ├── 02-system-design-fundamentals.md
│ ├── 03-designing-a-url-shortener.md
├── index.html
├── interactive.html
├── real-world-systems/
│ ├── chat-application.md
│ ├── e-commerce-platform.md
│ ├── file-storage.md
│ ├── metrics-monitoring.md
│ ├── notification-system.md
│ ├── payment-system.md
│ ├── rate-limiter.md
│ ├── ride-sharing.md
│ ├── search-engine.md
│ ├── social-media-feed.md
│ ├── ticket-booking.md
│ ├── url-shortener.md
│ ├── video-streaming.md
│ ├── web-crawler.md
├── study-plan/
│ ├── system-design-study-plan.md

📖 Documentation Preview README excerpt

System Design Cheat Sheets

50+ system architecture diagrams and walkthroughs for acing system design interviews at top tech companies.

Whether you're preparing for your first L5 interview or brushing up for a staff-level loop, these cheatsheets give you the building blocks, patterns, and real-world system breakdowns you need — all in portable Markdown with ASCII architecture diagrams.

---

Table of Contents

  • [What's Included](#whats-included)
  • [How to Use These Cheatsheets](#how-to-use-these-cheatsheets)
  • [Recommended Study Order](#recommended-study-order)
  • [File Index](#file-index)

    • - [Fundamentals](#fundamentals-10-topics)

    - [Real-World System Designs](#real-world-system-designs-14-systems)

    - [Quick-Reference Cheatsheets](#quick-reference-cheatsheets-4-sheets)

    - [Study Plan](#study-plan)

  • [Tips for Interview Day](#tips-for-interview-day)
  • [FAQ](#faq)
  • [Support](#support)
  • [License](#license)

    • ---

    What's Included

    CategoryCountDescription
    **Fundamentals**10Core building blocks — load balancers, caching, databases, queues, APIs, CDN/DNS, storage, networking, consistency, security
    **Real-World Systems**14End-to-end designs — URL shortener, chat app, newsfeed, video streaming, ride-sharing, e-commerce, search engine, and more
    **Cheatsheets**4Quick-reference cards — estimation numbers, interview framework, tradeoff matrices, scaling patterns
    **Study Plan**14-week structured plan with daily topics and practice problems
    **Total diagrams**50+ASCII architecture diagrams embedded throughout every file

    ---

    How to Use These Cheatsheets

    For Interview Prep (recommended)

    1. Start with the study plan (study-plan/system-design-study-plan.md) — it maps out a 4-week schedule

    2. Learn fundamentals first — you can't design a system if you don't know what a load balancer does

    3. Work through real-world systems — try designing each system on a whiteboard before reading the walkthrough

    4. Keep cheatsheets handy — use the estimation and framework sheets as quick references during practice

    For Quick Reference
  • Jump directly to any topic via the [File Index](#file-index) below
  • Each file is self-contained — no need to read in order
  • Use `Ctrl+F` / `Cmd+F` to search within any file
    • For Mock Interviews

    1. Pick a random system from real-world-systems/

    2. Set a 35-minute timer

    3. Design the system on paper/whiteboard without looking at the walkthrough

    4. Compare your design against the cheatsheet

    5. Note what you missed — those are your weak spots to study


    ... preview truncated, see full README in product download.

    📄 Code Sample .json preview

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    📅 Changelog

    v1.0.0 — Initial release.

    Purchases include lifetime updates. Check the product page for the latest version.

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