Hand-drawn or digital architectural flows mapping API Gateways, Microservices, Caches, and Database Shards.
Create cards for: CAP theorem, consistent hashing, sharding, replication lag, idempotency, etc.
Reading the book cover-to-cover like a novel will not help you pass a FAANG interview. You need an active, structured study strategy. The 4-Step Framework system design interview alex xu volume 2 pdf github
Chapters on Payment Systems and Digital Wallets are critical because modern interviewers love asking about data integrity. Ensure you thoroughly understand , distributed transactions (2-phase commit) , and reconciliation loops —concepts that Alex Xu explains with pristine clarity. Final Thoughts
Managing persistent connections via WebSockets , designing efficient data delivery networks (CDNs), and implementing hierarchical video chunking for adaptive bitrate streaming. The 4-Step Framework for the Interview You need an active, structured study strategy
Efficiently calculating and updating the real-time locations of millions of moving users.
Designing location-based applications using Geospatial indexes like Geohash, quadtrees, or Google’s S2 geometry. designing efficient data delivery networks (CDNs)
Volume 2 provides step-by-step breakdowns for several enterprise-grade systems: 1. Nearby Friends & Proximity Services
Here's a chapter-by-chapter guide to Alex Xu's "System Design Interview - Volume 2":
How to divide the world into grids to look up coordinates efficiently.