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 makes header-based routing different from host-based or path-based routing?

It inspects custom metadata in the HTTP request, not just the URL, Host-based and path-based routing look at parts of the URL. Header-based routing looks at the HTTP headers, which can carry any custom metadata like client platform, app version, or user tier. This gives you much more flexibility in routing decisions.

A company wants to route beta testers to a canary deployment while everyone else hits stable production. Which approach works?

Set an X-Beta-Tester: true header in the client and route on it, Header-based routing is the cleanest solution here. The beta client sends a custom header, and the load balancer routes those requests to the canary backend. No URL changes, no DNS changes, no random distribution, only known beta testers hit the new code.

What's the biggest operational risk with header-based routing?

A mismatch between client header values and routing rules causes silent misrouting, The real danger is silent failure. If the client sends 'iOS' but the routing rule expects 'ios', the request quietly falls through to the default backend. No errors, no alerts, just wrong behavior. Always normalize header values and test routing changes thoroughly.

Header-Based 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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