Is this a video course?

No. This is an interactive, slide-based learning platform. Each lesson has rich text, animated diagrams, live code editors, and quizzes. You learn by reading, interacting, and doing, not by watching videos passively.

How long do I have access?

Forever. Both pricing tiers are one-time payments with lifetime access. This includes all current 766 lessons and any future content we add.

What level of experience do I need?

None. We start from absolute basics like 'What is latency?' and build up to distributed consensus protocols. The Foundation level assumes zero prior knowledge of system design.

How much does the system design course cost?

7.99 US dollars for lifetime access globally, or 499 Indian rupees for lifetime access in India. One-time payment, no subscription, no hidden fees. 11 lessons are free with no signup required.

What technologies are covered?

Everything from DNS and load balancers to Kubernetes, Kafka, distributed databases, consensus protocols, stream processing, security architecture, and observability. We cover principles and real-world implementations used at Netflix, Google, Amazon, Uber, Stripe, and more.

Is this useful for system design interview preparation?

Yes. The lessons are structured around the exact topics asked in system design interviews at FAANG and top-tier companies. Interactive diagrams help you practice whiteboard-style explanations. Covers everything from URL shortener design to distributed payment systems.

How is this different from ByteByteGo or Educative?

766 interactive lessons (4x more than most competitors), 16 different diagram types that build step by step, real production examples from Netflix, Google, Amazon, Uber, and Stripe, and lifetime access for a one-time payment of $7.99 instead of annual subscriptions costing 100 to 200 dollars per year.

A batch of price data arrives where every value is a valid, positive number, but a partner started sending prices in cents instead of dollars. Which kind of check catches this?

A distribution check comparing the batch's profile against a frozen baseline, Every value is individually valid, so per-row checks pass. The population has shifted by a factor of a hundred. Only a distribution check, comparing the batch profile to a frozen baseline, catches a shift where no single value is malformed.

A validation run finds that a required primary-key column has duplicate values. What should a well-designed pipeline do?

Circuit-break: fail the task, halt downstream jobs, and page on-call while the last good data keeps serving, A duplicated primary key is a critical failure. The circuit breaker halts the pipeline so nothing trains or serves on the bad batch, pages a human, and leaves the last trusted batch serving. A stopped pipeline is safer than a poisoned model.

Why is running the same validation suite on both training data and live serving data important?

It catches training-serving skew: when a feature is computed differently offline than online, Training-serving skew happens when training and serving data quietly disagree, for example a feature computed one way offline and another way online. Running one shared suite against the same frozen profile on both sides is what catches that disagreement before it becomes a bad prediction.

, engineers learning right now

Aryan from Bengaluru unlocked lifetime access · 3 minutes ago

Data Validation and Quality: Stopping Garbage Before It Reaches the Model

Name: System Design Masterclass
Availability: InStock

in Data Engineering For Ml

This lesson is part of the ML Platform Engineering course. Unlock the full course, a separate one-time payment, for lifetime access.

Joined by 8,247 engineers since launch

Global

$20/lifetime

One-time payment via PayPal

Get Lifetime Access

5 Foundation lessons free, try before you buy

India Special

India

₹999/lifetime

One-time via UPI, cards, or net banking

Get Lifetime Access

5 Foundation lessons free, try before you buy

“The interactive diagrams alone are worth way more than the price.”

Anish K., Senior Engineer at a Bengaluru startup

Every ML Platform lesson, Foundation to Advanced

Real architecture diagrams with real tool logos

MLOps, LLMOps, and data engineering in depth

Quizzes with instant feedback

Built and reviewed by senior engineers

Lifetime access, all future content included

The first 5 Foundation lessons of this course are free, no payment needed. Try them now