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.

Why did Atlassian's April 2022 recovery take 14 days despite having backups?

The restore process had never been tested at the scale of 400 simultaneous site recoveries, Atlassian had backups, but their restore pipeline assumed individual site recoveries. Recovering 400 sites simultaneously exposed bottlenecks in their restore workers, storage tiers, and coordination processes that had never been exercised.

What is the key difference between automated backup verification and a restore drill?

Automated verification proves the file is restorable in a sandbox; drills prove the team can execute recovery under real operational conditions, Automated verification answers whether the backup file works. A drill answers whether the team, the runbook, the infrastructure, and the communication channels all work together under time pressure. Both are necessary because they catch different categories of failure.

According to Google SRE data, by how much do quarterly game days reduce real-incident MTTR compared to scheduled drills alone?

40 to 50 percent, Google SRE published data showing roughly 40 to 50% MTTR improvement from quarterly game days. The benefit comes primarily from muscle memory: when the real incident arrives, the team already knows the procedures and communication patterns.

Why should restore drills use randomly selected backups rather than the most recent one?

Engineers subconsciously pick healthy backups, and random selection forces the team to handle stale schemas and unfamiliar data, Random selection prevents cherry-picking. A backup from 25 days ago may have a schema that does not match the current application, and discovering this during a drill is far better than discovering it during a real incident.

Restore Testing

Name: System Design Masterclass
Availability: InStock

in Reliability Resilience

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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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

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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

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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