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 Postgres database supports 100 connections. You have 10 app instances. What should each instance's pool max be?

10, divide the database limit equally among instances, 10 instances * 10 connections each = 100 total, matching the database limit. If each instance had 100, you could potentially open 1,000 connections, 10x what the database handles, causing connection refused errors.

Why is connection pooling challenging in serverless environments (AWS Lambda)?

Each Lambda instance creates its own pool, and thousands of concurrent instances can exhaust the database's connection limit, Each Lambda instance maintains its own connection pool. During a traffic spike, thousands of instances spin up, each opening connections. This creates a connection storm that can overwhelm the database. The fix: external connection poolers (PgBouncer, RDS Proxy) that manage a fixed pool shared across all Lambda instances.

How does HTTP/2 improve connection reuse over HTTP/1.1?

It multiplexes many concurrent requests over a single TCP connection using streams, HTTP/1.1 allows only one request at a time per connection. Browsers open 6 parallel connections to work around this. HTTP/2 sends multiple concurrent requests as interleaved streams on a single connection, eliminating the need for multiple connections and their associated handshake costs.

Connection Reuse

Name: System Design Masterclass
Availability: InStock

in Api Design Protocols

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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