This book goes into a lot of detail about how and why Terracotta was made. It goes into a lot of topics such as scaling, the jvm, synchronization, etc.
It talks about the philosophy of terracotta and goes through in detail about the choices that you have when for example, you have to scale, and the tradeoffs of each of those choices.
In short, this book is a good read, even if you are not going to be using terracotta just yet.

This book is a must for anyone trying to understand and get real performance out of a custom terracotta deployment.

There is a lot of information in this book that is either not on the terracotta wiki or is scattered across many sites.

This book really presents an in-depth coverage of the power of Terracotta, backed by real world how-to examples.

The only thing that could be better is the language. Sometimes the concept is explained in a very dense language upfront, so by the time you get to the example, you get a little lost and need to go back and re-read some paragraphs.

Besides that, it's one of those examples where the content compensates the shape. A must have if you are looking forward to turning you application into a clustered solution.

A must have book to buy to understanding Terracotta Best Practices,I personally was an early adopter and has had much success, Terracotta has proven over the years to help ease the development of HA systems, that scale from the start...this book has real world examples (not just Hello Worlds! Programs) ..to build and deploy systems backed by Terracotta for your enterprise.