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 team deploys a new API version and configures weighted routing: 95% to stable, 5% to the new version. After monitoring shows no issues, what's the typical next step?

Gradually increase the new version's weight (25%, 50%, 100%), Canary deployments work by gradually ramping up traffic to the new version. Jumping straight to 100% defeats the purpose, you'd lose the ability to catch problems that only appear at higher traffic volumes. The gradual ramp gives you safety checkpoints at each stage.

With weighted routing set to 90/10, you observe that in a 10-request window, all 10 went to the primary backend. Is this a bug?

No, probabilistic distribution only converges over large sample sizes, Most weighted routing implementations use probabilistic selection, not strict round-robin counting. Over 10 requests, a 90/10 split might occasionally produce 10/0 or 8/2. Over 10,000 requests, the distribution will be very close to 90/10. This is statistics, not a bug.

What's the key advantage of blue-green deployment using weighted routing over a traditional deployment?

The old version stays running, enabling instant rollback by flipping weights, In blue-green, both environments are running simultaneously. If the new version has problems, you shift the weight back to the old version and traffic moves instantly. No redeployment, no startup time, no cold starts. Rollback is just a config change.

Weighted Routing

Name: System Design Masterclass
Availability: InStock

in Load Balancing Proxies

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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