Many congrats to Ari, who did the bulk of the work, including the most painful parts. I wrote a couple chapters, specifically Chapter 5 on Caching and Chapter 9 on Integration Modules. Many many thanks go to the internal reviewers, our technical reviewer, and the editor who kept us honest and certainly improved my work immensely.
After even this limited exposure to writing a book, I think I may be cured from my desires to write one myself. :) Writing a book is a lot more work and way more pain than I expected, even having expected a lot.