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.

You're designing a system for 500K users, all in the US, with a 20:1 read-to-write ratio. What's the most appropriate starting topology?

Star topology, one primary with 2-3 async read replicas in the same region, For a single-region, read-heavy workload at 500K users, star topology with async read replicas is the sweet spot. It handles the 20:1 read ratio by distributing reads across replicas. No need for multi-region or multi-master complexity when all users are in one region.

Your system needs to grow from US-only to serving users in the US, EU, and Asia. What's the next evolution step?

Add cross-region read replicas in EU and Asia for low-latency reads, keeping the US primary for writes, The natural next step is cross-region read replicas. EU and Asian users get fast reads from local replicas. Writes still go to the US primary (acceptable latency for most apps). Only escalate to active-active if write latency for international users becomes a real problem.

A financial system requires zero data loss (RPO = 0). Which replication mode is necessary?

Synchronous, the write isn't confirmed until the replica has the data, guaranteeing zero loss on failover, RPO = 0 means no data can be lost during failover. Only synchronous replication guarantees this, the write isn't acknowledged until the replica confirms it has the data. Semi-sync only guarantees one replica has it, and falls back to async if that replica is down. For absolute zero RPO, synchronous is the only option.

Replication Topology

Name: System Design Masterclass
Availability: InStock

in Data Replication Distribution

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

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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

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Live code editors with real execution

Quizzes with instant feedback

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