Hello Esteban Suarez,
Thank you for question!
1) We covered an overview about design patterns on the first chapter. Throughout of book we explained about enterprise patterns, reactive patterns and the best practices of uses of current techniques in Java EE 8, like reactive programming and aspect-oriented programming. The implementation os some enterprise patterns uses some design patterns and we covered that. I think the topic about reactive patterns and aspect-oriented programming are very important to understand now, because I guess with this migration from Java EE to Jakarta EE we will have many evolution about these techniques in the future.
2) In this book we explained about deployment patterns and performance and monitoring on the topic of operational patterns. This topic is interesting because we covered a new view about some kind of patterns that acts on high level.
I will post some contents about that on my site as a overview. Access my site and follow me.
Site: Jakarta EE with Coffee