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Mastering Akka

You're reading from   Mastering Akka A hands-on guide to build application using the Akka framework

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Product type Paperback
Published in Oct 2016
Publisher Packt
ISBN-13 9781786465023
Length 436 pages
Edition 1st Edition
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Author (1):
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Christian Baxter Christian Baxter
Author Profile Icon Christian Baxter
Christian Baxter
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Table of Contents (11) Chapters Close

Preface 1. Building a Better Reactive App FREE CHAPTER 2. Simplifying Concurrent Programming with Actors 3. Curing Anemic Models with Domain-Driven Design 4. Making History with Event Sourcing 5. Separating Concerns with CQRS 6. Going with the Flow with Akka Streams 7. REST Easy with Akka HTTP 8. Scaling Out with Akka Remoting/Clustering 9. Managing Deployments with ConductR 10. Troubleshooting and Best Practices

Refactoring sales order processing


As part of the work in this chapter, I also completed the refactor for the sales order processing module. In doing so, I built out a new read model with a ViewBuilder class and View to support the SalesOrder entity. I will not go over all of that code here, because, for the most part, it's on par with what we just covered for book. I will highlight some of the differences here though. I'll also detail how I redid the inventory allocation process so its not based on Persistence Query and our resumable projection framework.

Denormalization in the SalesOrder read model

One of the benefits of a read model is that you can denormalize the data a bit to better suit some of the queries you need to do. As this model is to be optimized to make queries more efficient, then denormalization is an acceptable practice, even though something like this is frowned upon in the write model, which is less efficient for storage. We took advantage of this ability when building...

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