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 have 5 servers behind multi-value routing. Server 3 fails its health check. What does the DNS response look like?

Only the 4 healthy server IPs are returned, in random order, Multi-value routing only includes healthy endpoints in the DNS response. Server 3 is excluded because it's failing health checks. The remaining 4 IPs are returned in randomized order, giving clients only working options.

What's the key advantage of multi-value routing over traditional round-robin DNS?

Multi-value integrates health checks so unhealthy IPs are excluded from responses, Traditional round-robin DNS blindly rotates through all configured IPs, including unhealthy ones. Multi-value routing checks endpoint health and only returns IPs that are currently passing their health checks. Clients never receive a dead server's IP.

When would you choose a dedicated load balancer over multi-value routing?

When you need precise traffic control, session affinity, or more than 8 endpoints, Multi-value routing works for simple setups with up to 8 endpoints and no need for session affinity or precise traffic splits. When you need sticky sessions, exact percentage-based routing, or dozens of backends, a proper load balancer gives you the control that DNS can't.

Multi-Value 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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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

Step-by-step animated diagrams

Live code editors with real execution

Quizzes with instant feedback

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