This is a 2000+ page, structured, handwritten system design resource covering everything you need — both High Level Design (HLD) and Low Level Design (LLD) — in one place.
Engineers using this structured approach have cracked system design rounds at companies like Uber, Amazon, Microsoft, Flipkart, Razorpay, Walmart, and fast-growing product startups.
It covers core distributed system fundamentals like load balancing, CAP theorem, consistency models, caching strategies, database sharding, rate limiting, API gateway, microservices, event-driven architecture, message queues, and zero-downtime deployment.
On the LLD side, it deeply explains SOLID principles, design patterns, concurrency, thread safety, UML modeling, and real interview problems like Parking Lot, Elevator System, Payment Processor, Chat Application, and Rate Limiter.
It also includes real-world case studies similar to:
Design Uber, Instagram, WhatsApp, Netflix, Twitter, Google Drive, URL Shortener, and Payment Gateway — broken down with requirement gathering, estimations, scaling strategies, bottleneck analysis, and trade-offs.
One-time access. Lifetime updates.