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.

Your average MTTD is 20 minutes and your average MTTR (time to resolve) is 15 minutes. If you can improve only one, which gives you more impact reduction?

MTTD, reducing detection time from 20 to 5 minutes saves 15 minutes from every incident, more than you could save from MTTR, When MTTD is larger than MTTR, detection is the bottleneck. Reducing MTTD from 20 to 5 minutes saves 15 minutes per incident. MTTR is already 15 minutes, you'd have to cut it to zero (impossible) to save the same amount. Always optimize the biggest component of total incident duration first.

Your monitoring checks run every 5 minutes. An outage occurs 10 seconds after a check passes. When is the earliest the outage can be detected?

In about 5 minutes, at the next monitoring check, With 5-minute check intervals, an outage occurring right after a check passes won't be detected until the next check, nearly 5 minutes later. This is why critical services should have check intervals of 15-30 seconds, not 5 minutes. Shorter intervals mean faster detection, at the cost of more monitoring load.

MTTD (Mean Time to Detect)

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

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India

₹999₹499/lifetime

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Foundation lessons free, try before you buy

Founders price, locked for the first 10,000 customers

“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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Live code editors with real execution

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