For engineers targeting roles at Big Tech companies like Google, Meta, or Amazon, by Lewis C. Lin and Shivam P. Patel is widely considered a foundational study guide. Unlike standard technical manuals, this book focuses on the process of communication and architectural decision-making required to pass high-stakes interviews. Core Framework: The PEDALS Method™
Performing "back-of-the-envelope" calculations for traffic, storage, and bandwidth to inform hardware needs.
Detailed walkthroughs for popular interview questions such as Design YouTube , Design Twitter , Design Instagram , and building a TinyURL solution .
Lewis C. Lin is a veteran in the interview coaching space and the CEO of Impact Interview . His background includes leadership roles at and Microsoft , while co-author Shivam P. Patel brings contemporary engineering insights from Meta (Facebook) . Is a PDF Version Available?
Selecting the right database (SQL vs. NoSQL) and defining the schema.