Book Image

Domain-Driven Design with Java - A Practitioner's Guide

By : Premanand Chandrasekaran, Karthik Krishnan
Book Image

Domain-Driven Design with Java - A Practitioner's Guide

By: Premanand Chandrasekaran, Karthik Krishnan

Overview of this book

Domain-Driven Design (DDD) makes available a set of techniques and patterns that enable domain experts, architects, and developers to work together to decompose complex business problems into a set of well-factored, collaborating, and loosely coupled subsystems. This practical guide will help you as a developer and architect to put your knowledge to work in order to create elegant software designs that are enjoyable to work with and easy to reason about. You'll begin with an introduction to the concepts of domain-driven design and discover various ways to apply them in real-world scenarios. You'll also appreciate how DDD is extremely relevant when creating cloud native solutions that employ modern techniques such as event-driven microservices and fine-grained architectures. As you advance through the chapters, you'll get acquainted with core DDD’s strategic design concepts such as the ubiquitous language, context maps, bounded contexts, and tactical design elements like aggregates and domain models and events. You'll understand how to apply modern, lightweight modeling techniques such as business value canvas, Wardley mapping, domain storytelling, and event storming, while also learning how to test-drive the system to create solutions that exhibit high degrees of internal quality. By the end of this software design book, you'll be able to architect, design, and implement robust, resilient, and performant distributed software solutions.
Table of Contents (17 chapters)
Part 1: Foundations
Part 2: Real-World DDD
Part 3: Evolution Patterns

Chapter 12: Beyond Functional Requirements

Sometimes I feel like I am being forgotten.

— Anonymous

While the functional requirements of the core of the system may be met adequately, it is just as important to place focus on the operational characteristics of the system. In this chapter, we will look at common pitfalls and how to get past them.

In this chapter, we will cover the following topics:

  • Observability
  • Consistency
  • Performance and scale
  • Trunk-based development
  • Continuous testing
  • Deployment automation
  • Refactoring
  • Invocation style
  • Logging
  • Versioning

By the end of this chapter, we will have learned about various aspects of the software life cycle to create a robust solution from a cross-functional perspective. We will also discuss additional features that we will need to add to make our solution performant, scalable, resilient to failure, and gain the ability to make changes reliably, repeatably, and rapidly. Furthermore...