Many enterprise applications intertwine code that defines an app’s behavior with code that defines its network communication and other non-functional concerns. The “service mesh� pattern, implemented by platforms like Istio, helps you push operational issues into the infrastructure so the application code is easier to understand, maintain, and adapt. Istio in Action teaches you how to implement a full-featured Istio-based service mesh to manage a microservices application. With the skills you learn in this comprehensive tutorial, you’ll be able to delegate the complex infrastructure of your cloud-native applications to Istio!
It took me a while to get through this book, but it doesn't mean it's bad.
1. its definition of service mesh and intro do what Istio is are probably the best ones I've ever seen in a book - no fluff, straight to the point 2. it's not focused on any particular cloud vendor - feel free to start reading regardless of where you want your services 3. I like the composition - it covered pretty much all the major concerns (from an architectural perspective) - in the correct order and depth 4. practical sections of the book (let's try the stuff out) unfortunately get quite boring and not very informative at some point ... you're pretty much asked to do kubectl apply w/o diving into how the parameterization is being done (what is the grammar, how is it structured, what's possible here) 5. three final chapters were far beyond what I needed or was able to validate - but it's good that the author wasn't afraid of non-trivial topics 6. what I really, really missed was a chapter (or even a few ...) about typical operational scenarios from the perspective of a service mesh operator - yeah, the book provides you the tools to figure this stuff out, yet, it'd be really comforting to see those
In the end, it's the best book on service meshes (in general) I've ever seen. Honestly recommended.
I had a pleasant time going through this book. Examples are quite well setup (so far I only needed to troubleshoot once).
Since everything is based on Envoy, I wish that the book could spend more time introducing it at the beginning rather than reintroducing it again in later parts of the book. And instead of providing links, the author could have recommended what the readers should explore more.
The book doesn't really explain much about istioctl either. The explanation on the various subcommand is provided throughout the examples, but the command is not actively used like kubectl so that's kinda understandable.