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 doesn't a sloppy quorum guarantee that a subsequent quorum read will see the latest write?

Because the write might be on a non-designated node that the reader doesn't check, In a sloppy quorum, a write might go to node D (a non-designated replica) instead of the unavailable node B. A subsequent reader checks the designated replicas {A, B, C}. If B is back but hasn't received the handoff from D yet, the reader sees stale data. The write is durable (on D) but not visible to the reader's quorum.

What is the primary advantage of sloppy quorums over strict quorums?

Higher write availability during partial node failures, Sloppy quorums allow writes to succeed even when the designated replica nodes are unavailable, by routing to alternative healthy nodes. This increases write availability at the cost of consistency, the fundamental trade-off Amazon chose for DynamoDB.

Sloppy Quorum

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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India

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Foundation lessons free, try before you buy

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