The author Alex Xu also made a blog post <a href="https://blog.bytebytego.com/p/twitter-architecture-2022-vs-2012" rel="nofollow">https://blog.bytebytego.com/p/twitter-architecture-2022-vs-2...</a> (<a href="https://news.ycombinator.com/item?id=33671932" rel="nofollow">https://news.ycombinator.com/item?id=33671932</a>)