New PDF release: Functional and Reactive Domain Modeling

By Debasish Ghosh

ISBN-10: 1617292249

ISBN-13: 9781617292248


Functional and Reactive area Modeling teaches you ways to consider the area version when it comes to natural features and the way to compose them to construct greater abstractions.

Purchase of the print ebook features a unfastened book in PDF, Kindle, and ePub codecs from Manning Publications.

About the Technology

Traditional disbursed purposes will not minimize it within the reactive international of microservices, quick facts, and sensor networks. To catch their dynamic relationships and dependencies, those platforms require a distinct method of area modeling. a website version composed of natural capabilities is a extra normal manner of representing a method in a reactive approach, and it maps at once onto applied sciences and styles like Akka, CQRS, and occasion sourcing.

About the Book

Functional and Reactive area Modeling teaches you constant, repeatable options for construction area versions in reactive structures. This e-book experiences the proper strategies of FP and reactive architectures after which methodically introduces this new method of area modeling. As you learn, you are going to examine the place and the way to use it, no matter if your platforms will not be in simple terms reactive or practical. knowledgeable mix of conception and perform, this ebook provides powerful examples you will go back to repeatedly as you practice those ideas in your personal projects.

What's Inside

  • Real-world libraries and frameworks
  • Establish significant reliability guarantees
  • Isolate area common sense from part effects
  • Introduction to reactive layout patterns

About the Reader

Readers will be happy with useful programming and conventional area modeling. Examples use the Scala language.

About the Author

Software architect Debasish Ghosh was once an early adopter of reactive layout utilizing Scala and Akka. he is the writer of DSLs in Action, released via Manning in 2010.

Table of Contents

  1. Functional area modeling: an introduction
  2. Scala for useful area models
  3. Designing practical area models
  4. Functional styles for area models
  5. Modularization of area models
  6. Being reactive
  7. Modeling with reactive streams
  8. Reactive endurance and occasion sourcing
  9. Testing your area model
  10. Summary - middle suggestions and principles

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Extra resources for Functional and Reactive Domain Modeling

Sample text

That’s another reason to favor purity of functions.

8 Enrich domain behavior through function composition using combinators. Note the Success path and the Failure path in the flow. A failure breaks the sequence immediately. 27 Managing side effects The primary takeaway of this section is to appreciate how function composition through combinators can lead to enrichment of domain behaviors. Composing smaller combinators to yield larger behaviors and functional thinking is the way to achieve that. In the next section, you’ll learn how functional thinking can lead to code that you can reason about, much like functions in mathematics.

It still has the functions modeled as methods of a class. With this approach, you’re often faced with the dilemma of which function should be part of which class. Also, it becomes difficult to compose functions implemented as methods of different classes. In this example, debit and credit are operations on a single account, and you’ve kept them as behaviors of Account. But an operation such as transfer has two accounts. Should it also be part of the Account class, or should you have it as part of a domain service?

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Functional and Reactive Domain Modeling by Debasish Ghosh

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