A .NET Core book about micoservices? Not really.
It's a book about building (technical aspects only!) small, theoretically independent micro-Web-Apis with ASP.NET Core. Needless to say, this is very far from actual, running, maintainable, "healthy" ecosystem of microservices. Not really surprisingly, technical aspects of ASP.NET Core are covered quite well, but all the other (really challenging) ones are barely scratched. Namely:
* there's a chapter about event sourcing & CQRS - seriously, is this the key part of building a microservice? c'mon ...
* there's a chapter about service discovery - it's actually quite fine
* a chapter about configuration management (as a subset of full solution provisioning and automation) -> I find it insufficient
* there's a chapter about ... web sockets ... yes, another critical ;P elements of microservices ...
And that's pretty much it. What about other, more vital aspects? Design principles? Dependency management (layering vs mesh, contract maintenance, binary contract vs open standards, etc.)? Monitoring?
I can't really recommend this book. It has two advantages: it's aimed at .NET devs (& majority of microservice-related books are either very generic or focus on different stacks) & it presents how to integrate Netlix OSS stack (in-general JVM-based) with ASP.NET Core - this is an interesting concept & book describes it quite well. But these are the only significant pros I can identify here ... ;/ The rest is just too shallow & uninspired.