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 is the main risk of last-write-wins conflict resolution?

It silently discards the earlier concurrent write, LWW picks the write with the later timestamp and discards the other. If Alice edits a field at 10:00:01 and Bob edits it at 10:00:02, Alice's change disappears with no warning.

How do CRDTs avoid merge conflicts?

By using data structures where any two replicas can merge deterministically regardless of order, CRDTs are mathematically designed so that merging any two states produces the same result regardless of the order operations were applied. This guarantees convergence without coordination.

Which sync approach does Replicache use?

Server-authoritative with speculative client mutations, Replicache has the client speculatively apply mutations locally for instant UI, but the server is the final authority. After the server processes mutations, it returns a new client view that replaces local state.

When is adding a sync engine to your app NOT worth the complexity?

When the app is a read-only dashboard that fetches fresh data on each visit, A read-only dashboard has no client-side mutations to sync. A simple fetch on page load or stale-while-revalidate pattern is sufficient. Sync engines solve the problem of merging concurrent writes, which does not exist for read-only data.

Sync Mechanisms

Name: System Design Masterclass
Availability: InStock

in Web Content Delivery

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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