You can find various community-maintained summaries, notes, and references on GitHub:
Some popular repositories (search them directly on GitHub): system design interview volume 2 pdf github
is a definitive blueprint for cracking architectural rounds at Big Tech companies. While Volume 1 focuses on foundational building blocks like rate limiters and key-value stores, Volume 2 dives deep into massive, real-world distributed systems. You can find various community-maintained summaries
These resources are subject to change over time, make sure to verify their existence and content before using them. Volume 2 dives deep into massive