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Learn System Design

Learn how large systems are designed, and how to explain your thinking in an interview. Start with estimates and core ideas, study the standard building blocks, then work through complete designs. Where an idea can be shown in code, a small Python program demonstrates it, with its real output.

Start with “What Is System Design?”View full syllabus
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Lessons available
27
In the full course
27
  • Beginner

    Start from zero. No experience needed.

  • Intermediate

    Combine ideas to solve real problems.

  • Advanced

    The techniques used in professional work.

Course syllabus

All 27 lessons are available. Start anywhere, or follow the parts in order.

  1. Part 1 · Beginner

    Foundations

    What system design is, how to approach an interview, and the core ideas: estimation, scaling, availability and consistency.

  2. Part 2 · Intermediate

    Building Blocks

    The parts that nearly every large system is made from: load balancers, caches, databases, queues and APIs.

  3. Part 3 · Advanced

    Case Studies

    Worked designs for the questions asked most often in interviews.

  4. Part 4 · Intermediate

    Interview Questions

    Frequently asked system design interview questions with answers.

Keep going with System Design

System Design practiceSolve exercises by difficulty.System Design interview questionsPrepare with hints and full answers.System Design cheat sheetsQuick reference when you need it.

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