Alex Xu had a new book published earlier this week. (Yesterday, actually.)
I took a crack at all the problems this past weekend prior to the book's release and uploaded my attempts to youtube, and I'm looking forward to seeing how my solutions compare to what's going to be in the book: https://youtube.com/playlist?list=PLlvnxKilk3aKx0oFua-HTtFf-d_inQ8Qn
As a heads up, I wouldn't call myself his biggest fan since I think he does a lot of hand waving on some occasions that I had found frustrating (which was part of the motivation behind trying to crack all the problems independently ahead of the book's release)
I was able to do this from a post that included all of his chapter titles a few weeks ago. Here are the chapter titles are below with a link to my solution for each problem going off just the prompt from the chapter title alone. (My final diagram is included directly in the thumbnail for the video.)
I can come back and do stuff like paste those diagrams directly into this post if there's much interest; otherwise, the video shows my process of thinking through each problem and creating the diagram.
Chapter 2 Visual Search System
Chapter 3 Google Street View Blurring System
Chapter 4 YouTube Video Search
Chapter 5 Harmful Content Detection
Chapter 6 Video Recommendation System
Chapter 7 Event Recommendation System
Chapter 8 Ad Click Prediction on Social Platforms
Chapter 9 Similar Listings on Vacation Rental Platforms
Chapter 10 Personalized News Feed
Chapter 11 People You May Know