Design the systems behind the apps you use every day
Not videos. Not a wall of text. You watch real architectures get built one component at a time, with the production trade offs, the failure modes, and the diagrams drawn the way a senior engineer draws them on a whiteboard.
One time. 5 dollars worldwide or 299 rupees in India. No subscription, no signup to start.
A real production stack with traffic flowing through it. Every box is a lesson.
The patterns that make systems scale, drawn and animated
This is how every concept is taught inside the course. Not a static slide, a moving diagram you can follow.
Load balancing
One front door, many servers. Spread traffic so no single box ever falls over.
Caching
Answer from memory in microseconds. Touch the database only when you truly must.
Sharding
Split one giant table across machines by key, so it scales far past one server.
Global edge
Serve every user from the location closest to them, anywhere in the world.
Message queues
Decouple producers from consumers so a traffic spike never takes you down.
Built for scale
Reason about throughput and tail latency, not just boxes and arrows.
Wherever you are starting from
The first lessons assume you have never designed a backend. The last ones get into the consensus and consistency problems that trip up Staff candidates. You start where you are, and the path is already laid out.
The same infrastructure you will learn to reason about
Most courses explain the answer. This one teaches you to derive it.
The gap between memorizing an architecture and designing one under pressure is reps. Every lesson makes you do the work.
Interactive, not slides
You step through every diagram as it is drawn, run the code, and answer a quiz that proves you understood it. Reading a definition is not the same as being able to design the thing.
Real production failures
Full teardowns of real outages, like the Cloudflare November 2025 incident, so you learn how systems break under load and bad config, not just how they look on a clean diagram.
Beginner to principal
766 lessons across 22 topics, in order. Latency and caching at the start, consistency models and consensus by the end. No prior distributed systems background assumed.
Built for the interview
Every pattern an interviewer actually probes: shard keys, cache invalidation, message queues, rate limiting, replication lag, and the trade offs behind each call.
One price. Yours for life.
Every lesson, every future lesson, no subscription. Try the first eleven free, then unlock the rest.