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.

What problem does hinted handoff solve?

It maintains write availability when a target replica node is temporarily unavailable, When a write's target node is temporarily down, hinted handoff routes the write to another node that holds it temporarily. The write succeeds (maintaining availability), and the data is forwarded to the correct node once it recovers.

Why do hints have an expiration window?

Without expiration, hinting nodes would accumulate unbounded amounts of data, consuming disk and memory, If a node is down for days or permanently, the hinting node would keep accumulating data meant for it. The hint window limits how long hints are stored. If the failed node doesn't return within that window, you rely on anti-entropy mechanisms (Merkle trees, read repair) to fix the data.

Hinted Handoff

Name: System Design Masterclass
Availability: InStock

in Distributed Systems Core

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

India Special

India

₹999₹499/lifetime

One-time via UPI, cards, or net banking

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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

Step-by-step animated diagrams

Live code editors with real execution

Quizzes with instant feedback

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Lifetime access, all future content included

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