Found my way here due to this book 
I’m not quite finished with it but did get through Chapter 13 to hear a bit about SOLID. I’ve tremendously enjoyed the book and have been sharing it with my tech book club group!
I’ve been dipping my toes into the ATProto world and felt that they were pretty similar. I’m not sure if the book touches on it eventually but I’m curious what community thoughts are on SOLID vs. ATProto.
I found this post about it already: Comparing Solid to ATProto PDS