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Building Modern Business Applications

Reactive Cloud Architecture for Java, Spring, and PostgreSQL

  • Book
  • © 2023

Overview

Authors:
  1. Peter Royal

    1. Sherman Oaks, USA

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  • Guides you in building business applications as reactive systems for the cloud
  • Helps you benefit from property-based testing of business applications
  • Provides examples written using Java, Spring, and PostgreSQL

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Table of contents (15 chapters)

  1. Front Matter

    Pages i-xx
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  2. Business Applications

    1. Front Matter

      Pages 1-1
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    2. What Is a Business Application?

      • Peter Royal
      Pages 3-8

    3. The Status Quo (and How It Came to Be)

      • Peter Royal
      Pages 9-19

  3. Design Prerequisites

    1. Front Matter

      Pages 21-21
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    2. What Is a Reactive System?

      • Peter Royal
      Pages 23-29

    3. Why Build Business Applications As Reactive Systems?

      • Peter Royal
      Pages 31-37

    4. What Is a Business Rule?

      • Peter Royal
      Pages 39-46

    5. Managing Time

      • Peter Royal
      Pages 47-55

  4. Design

    1. Front Matter

      Pages 57-57
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    2. Constraints and Principles

      • Peter Royal
      Pages 59-69

    3. High-Level Data Flow

      • Peter Royal
      Pages 71-79

    4. Command Processor

      • Peter Royal
      Pages 81-90

    5. Command Generator

      • Peter Royal
      Pages 91-104

    6. Event Materializer

      • Peter Royal
      Pages 105-116

    7. Testing, Monitoring, and Observability

      • Peter Royal
      Pages 117-131

    8. Required Technologies

      • Peter Royal
      Pages 133-143

  5. Implementation

    1. Front Matter

      Pages 145-145
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    2. Building with Modern Spring, Java, and PostgreSQL

      • Peter Royal
      Pages 147-162

    3. Expansion Points and Beyond

      • Peter Royal
      Pages 163-179
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Keywords

About this book

Discover a new way of thinking about business applications in light of the massive industry shift toward cloud computing and reactive programming technologies. This book synthesizes technologies and techniques such as event sourcing, command query responsibility segregation (CQRS), property-based testing, and GraphQL into a cohesive guide for modern business applications that benefit every developer.

The book begins with a look at the fundamentals of modern business applications. These fundamentals include business rules and the managing of data over time. The benefits of reactive techniques are explained, including how they are fundamentally aligned with what application developers strive to achieve in their work.


Author Peter Royal equips you with sound guidance to follow as you evolve your existing systems, as well as examples of how to build those systems using modern techniques in Spring, Java, and PostgreSQL.


What You Will Learn
  • Architect business applications for cloud-based environments
  • Design sustainable business applications
  • Integrate GraphQL best practices into business applications
  • Use property-based testing to exhaustively test possible system states
  • Think about business applications in terms of message flows
  • Relate the benefits of reactive systems to business goals
  • Model time appropriately for business requirements



Who This Book Is For


Practicing software developers who are building business applications, developers who are being asked to deploy into cloud environments that are more volatile than statically provisioned data centers, developers who want to increase the reliability of their systems and are struggling to find the right paradigms and architectures to achieve their goals, developers who see and use capabilities in software in other areas of their lives and want to bring those capabilities into their own work, and developers with experience designing other types of software who want to learn how to design business applications

Authors and Affiliations

  • Sherman Oaks, USA

    Peter Royal

About the author

​Peter Royal is a software developer currently residing in Los Angeles, CA. He has been writing software since high school, with his first business application being a calendar tool for his school. Since then, he has written business applications for a variety of industries as a contractor or in-house developer. He enjoys building tools for co-workers and being able to work with colleagues to iterate and customize, with the goal of making tools that are not frustrating to use. He has come to appreciate pragmatic architectures and practices that enable systems to thrive for the long-term.

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