To build a well-rounded study plan, you must master the fundamental building blocks that Alex Xu and other industry experts emphasize. Scalability Basics
Eviction policies (LRU, LFU), Cache-Aside, Write-Through, and handling Cache Avalanche/Cache Penetration.
A curated list of the (e.g., Netflix, Uber) referenced in Xu's books . 3. Expert Preparation Strategy System Design Interview Books: Volume 1 vs Volume 2
Discuss Sharding keys, Master-Slave replication, or moving to NoSQL.
(often mistakenly referred to as Alex Wu). It is widely considered the gold standard for tech interview prep, especially for landing roles at major tech companies. Top GitHub Resources for Alex Xu's Material
Look for ( .md ) or PDFs in the docs/ folder of study repos — these are often personal notes, not full book PDFs.
If you're prepping for senior engineering interviews, you've definitely heard of .
Why Alex Xu’s "System Design Interview" is the Best Resource
Hosting or downloading copyrighted material violates intellectual property laws. GitHub frequently takes down these repositories via DMCA notices, meaning your bookmarked link could disappear overnight.
Draw a blueprint with clients, web servers, API gateways, load balancers, databases, and caches.
To make the most of your GitHub and PDF study guides, ensure you have a flawless understanding of these foundational building blocks:
However, there is a legal way to get a PDF without violating copyright:
The classic, foundational question. Web Crawler, Newsfeed System, and Chat System. Focus on Trade-offs
Unlike purely theoretical books, Xu provides a 4-step framework to structure your interview: Understand the problem →right arrow High-level design →right arrow →right arrow Wrap up . 2. Best GitHub Repositories for Study
Alex Xu’s methodology, featured prominently on his platform ByteByteGo , simplifies complex design problems into four repeatable steps: