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.

How does DNS-level geolocation routing determine a user's location?

It maps the DNS resolver's IP address to a geographic location using a GeoIP database, DNS geolocation works by looking up the IP address of the DNS resolver (or the client's subnet if EDNS Client Subnet is supported) in a GeoIP database. It doesn't have access to GPS, HTTP headers, or OS settings, those are application-layer concerns, and DNS operates below that.

A European e-commerce company must comply with GDPR. How does geolocation routing help?

It routes European users to EU-based infrastructure so their data stays within the region, GDPR has data residency requirements. European user data should be processed and stored within the EU (or approved regions). Geolocation routing ensures requests from EU users are handled by EU-based servers, keeping the data within compliant jurisdictions.

What's the main limitation of DNS-level geolocation routing?

It routes based on DNS resolver location, which may not match the actual user location, DNS geolocation sees the IP of the DNS resolver, not the user. If someone in Tokyo uses Google's 8.8.8.8 resolver (which might route through a US-based server), the DNS could return a US endpoint instead of a Japanese one. EDNS Client Subnet helps but isn't universally supported.

Geolocation 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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