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.

Which of these is a properly defined SLI?

99% of checkout API requests return a non-5xx response within 500ms, A proper SLI is a specific, measurable ratio that reflects the user's experience. '99% of checkout requests return non-5xx in under 500ms' is specific (checkout endpoint), measurable (ratio of good requests), and user-centric (measures what the user experiences). CPU utilization and database metrics are internal signals, not SLIs.

Your API's average response time is 100ms. Your P99 is 4 seconds. Which metric should your latency SLI use?

A percentile threshold, like '95% of requests complete in under 300ms', to capture the tail latency, Averages hide tail latency. If your average is 100ms but 1% of users wait 4 seconds, the average gives a misleadingly rosy picture. Percentile-based SLIs (like 'X% of requests under Y ms') explicitly account for the worst-case user experiences that averages mask.

SLI (Service Level Indicators)

Name: System Design Masterclass
Availability: InStock

in Observability Monitoring

This lesson is part of the full System Design Masterclass. Unlock it along with 765 other lessons for a one-time payment.

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$19.99$7.99/lifetime

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Foundation lessons free, try before you buy

Founders price, locked for the first 10,000 customers

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India

₹999₹499/lifetime

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Foundation lessons free, try before you buy

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

Anish K., Senior Engineer at a Bengaluru startup

All 766 interactive lessons

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