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 app has a user service, order service, and a marketing website, all behind yourapp.com. Requests to /api/users should reach the user service. What enables this?

Path-based routing, the load balancer inspects the URL path and forwards to the matching backend, Path-based routing at the load balancer (or reverse proxy) inspects each request's URL path and forwards it to the configured backend. /api/users goes to the user service, /api/orders goes to the order service. The client sees one domain; the infrastructure has many services.

You configure path-based routing with a rule for /api/ and another for /api/v2/. A request to /api/v2/users hits the generic /api/ rule instead. What went wrong?

Path matching order or specificity is wrong, the broader /api/ rule matched before the more specific /api/v2/ rule, In first-match-wins routing, the broader /api/ rule catches the request before the more specific /api/v2/ rule gets evaluated. The fix depends on your router: either reorder rules so /api/v2/ comes first, or use longest-prefix matching which naturally prefers more specific paths.

A team is migrating from a monolith to microservices. They want to route /api/orders to a new order service while keeping everything else on the monolith. What's the easiest approach?

Add a path-based routing rule at the load balancer: /api/orders goes to the new service, everything else stays with the monolith, Path-based routing is the strangler fig pattern in action. Add a rule for /api/orders pointing to the new service. All other paths continue to the monolith. Over time, extract more services and add more routing rules. No client changes needed, same domain, same paths.

Path-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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