Welcome to an interactive and practical course designed to help you learn System Design from scratch.

System Design can feel overwhelming because it brings together many different topics, including networking, databases, caching, load balancing, messaging, distributed systems, scalability, reliability, and security.

This course organizes those concepts into a structured roadmap so you can learn them in the right order, understand how they connect, and apply them while designing real-world systems.

A significant portion of the course is available for free to support the wider developer community. If you find the course valuable and want to go deeper, you can upgrade to Premium to unlock all premium concepts, animations, listen mode, and AI features.

We also have an open source GitHub repository for learning System Design if you are looking for free resources.

You can also subscribe to our newsletter, where we regularly share practical System Design concepts, explanations, and interview insights.

Follow a step-by-step roadmap that takes you from foundational concepts to advanced System Design topics in a logical order.

You will build a strong foundation in areas such as:

Each topic builds on the previous one, helping you understand not only how individual components work, but also how they come together to form scalable and reliable systems.

Understand complex System Design concepts through step-by-step animations that show how requests flow, data moves, and different components interact within a system.

These visual explanations help you build an intuitive understanding of concepts that can be difficult to grasp through text and static diagrams alone.

Practice individual System Design concepts through mock interviews with an AI interviewer and an interactive whiteboard.

Explain your understanding, draw diagrams, respond to follow-up questions, and receive detailed feedback on your technical knowledge, reasoning, communication, and ability to apply the concept.

You can find the link to the mock interview on top of each concept chapter.

Test your understanding with quizzes at the end of important chapters.

Each quiz provides immediate feedback, helping you identify knowledge gaps and reinforce key concepts before moving forward.

The course includes an interactive Listen Mode that lets you listen to chapters instead of reading them.

As the narration progresses, the current paragraph is highlighted automatically, making it easy to follow along. Listen Mode can also describe diagrams and read code snippets, helping you learn while commuting, exercising, or revising away from your screen.

We are creating hands-on exercises for important topics so you can practice solving real System Design challenges through code and architecture diagrams.

These exercises will help you apply system design concepts instead of learning them only in theory.

Most of the course is currently available in an interactive, text-based format, which is well suited for active and hands-on learning.

However, many learners also prefer video lessons. We are therefore working to create videos for the most important topics and will publish them gradually over the coming months, giving you the flexibility to learn in whichever format works best for you.

About the Author

Ashish Pratap Singh

Software Engineer · Educator · Creator (ex-Amazon, Adobe)

Hi, I’m Ashish, the creator of AlgoMaster.io.

This course exists because I remember what it feels like to start from zero. In 2019, when I first decided to learn system design, I was completely stuck. Where do you begin? Which topics actually matter? How deep is deep enough?

Most resources I found fell into one of two buckets: either they were too shallow (just enough to get through an interview) or too academic (heavy on theory, light on real-world context). And the biggest gap was the “why”. Concepts were introduced, but rarely explained in a way that made them click.

So I built the course I wish I had.

My goal is to help you develop a strong, practical understanding of system design fundamentals and core distributed systems concepts, all in one structured place.