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 head-of-line blocking in HTTP/1.1?

When one slow response blocks all subsequent requests on the same connection because HTTP/1.1 processes requests sequentially, HTTP/1.1 processes one request at a time per connection. If Request A takes 2 seconds, Requests B, C, D wait 2 seconds before they even start, regardless of how fast the server could respond to them. HTTP/2 solves this by multiplexing: all requests proceed independently.

Why does HTTP/2 need only one TCP connection per domain instead of six?

Because HTTP/2 multiplexes many independent streams over a single connection using binary framing, HTTP/2's binary framing layer breaks requests and responses into small frames, interleaves them on one connection, and reassembles them by stream ID. This eliminates the need for multiple connections. One connection can carry thousands of concurrent requests without blocking.

Why was HTTP/2 Server Push deprecated?

Servers cannot know what the browser has cached, so over 50% of pushed resources were already cached, wasting bandwidth, The fundamental problem: the server guesses what the browser needs, but the browser may already have those resources cached. Chrome's measurements showed over half of pushed resources were wasted. 103 Early Hints replaced it: the server tells the browser what to preload (via Link headers) without sending the actual bytes.

What problem does HTTP/2 NOT solve that HTTP/3 addresses?

TCP-level head-of-line blocking, where a single lost packet blocks all multiplexed streams until retransmitted, HTTP/2 multiplexes streams at the application layer, but they all share one TCP connection. TCP guarantees in-order delivery, so a lost packet on any stream blocks all streams until retransmission completes. HTTP/3 uses QUIC (UDP) where each stream has independent packet loss recovery. A lost packet on stream 1 does not affect stream 3.

HTTP/2 Multiplexing

Name: System Design Masterclass
Availability: InStock

in Api Design Protocols

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