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Implementing Domain-Driven Design de Vaughn Vernon

Implementing Domain-Driven Design

Autor Vaughn Vernon
en Limba Engleză Hardback – feb 2013

Descoperim aici o resursă tehnică fundamentală care debutează prin ancorarea conceptelor abstracte în implementări riguroase, oferind exemple de cod în limbajul Java (direct transferabile în C#) prin intermediul unui studiu de caz complex: dezvoltarea unui sistem SaaS de tip multitenant. Implementing Domain-Driven Design nu se limitează la teorie, ci furnizează instrumentele necesare pentru a transforma viziunea de business în software funcțional și scalabil. Notăm cu interes structura progresivă a lucrării, care ghidează cititorul de la fundamentele designului strategic — definirea contextelor delimitate (Bounded Context) și a limbajului ubicuu — către detaliile tactice de implementare. Capitolele dedicate entităților, obiectelor valoare (Value Objects) și agregatelor oferă soluții clare pentru gestionarea complexității în stratul de model al domeniului. Ca și Vaughn Vernon în Domain-Driven Design Distilled, autorul distilează experiență reală în principii acționabile, însă în acest volum extinde analiza către arhitecturi moderne precum CQRS, Event-Driven și arhitectura hexagonală (Ports and Adapters). Remarcăm modul în care această lucrare completează viziunea autorului expusă în Strategic Monoliths and Microservices: Driving Innovation Using Purposeful Architecture. Dacă în lucrarea menționată accentul cade pe deciziile arhitecturale la nivel înalt, Implementing Domain-Driven Design oferă „mecanica” necesară pentru a executa acele decizii. Este o explorare tehnică a modului în care designul condus de domeniu poate reduce timpul de lansare pe piață și poate îmbunătăți calitatea codului prin alinierea strictă cu nevoile de business.

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Specificații

ISBN-13: 9780321834577
ISBN-10: 0321834577
Pagini: 656
Dimensiuni: 184 x 238 x 40 mm
Greutate: 1.27 kg
Editura: ADDISON-WESLEY

De ce să citești această carte

Recomandăm această carte arhitecților software și dezvoltatorilor seniori care doresc să depășească etapa de „DDD-lite” și să implementeze sisteme complexe folosind modele tactice și strategice corecte. Cititorul câștigă o metodologie clară pentru a gestiona logica de business complicată, învățând să utilizeze eficient evenimentele de domeniu și să proiecteze depozite de date (Repositories) adaptate pentru NoSQL sau ORM.

Despre autor

Vaughn Vernon este un expert recunoscut la nivel mondial în domeniul arhitecturii software și un lider de opinie în comunitatea Domain-Driven Design. Cu o experiență de peste trei decenii în programare și design de sisteme, el s-a specializat în simplificarea arhitecturilor complexe și în promovarea metodologiilor care aliniază tehnologia cu obiectivele de business. Este autorul unor lucrări de referință care extind moștenirea lui Eric Evans, fiind totodată un consultant activ care ajută organizațiile să adopte microservicii și arhitecturi reactive într-un mod sustenabil.

Cuprins

Preface Guide to This Book Chapter 1: Getting Started With DDD Chapter 2: Domains, Subdomains, and Bounded Contexts Chapter 3: Context Maps Chapter 4: Architecture Chapter 5: Entities Chapter 6: Value Objects Chapter 7: Services Chapter 8: Domain-Driven Events Chapter 9: Modules Chapter 10: Aggregates Chapter 11: Factories Chapter 12: Repositories Chapter 13: Integrating Bounded Contexts Chapter 14: Application Appendix A: Aggregates and Event Sourcing: A ES Index

Notă biografică

Vaughn Vernon is a veteran software craftsman, with more than 25 years of experience in software design, development, and architecture. Vaughn is a thought leader in simplifying software design and implementation using innovative methods in distributed computing. Vaughn has been programming with object-oriented languages since the 1980s and applying the tenets of Domain-Driven Design since his Smalltalk domain modeling days in the early 1990s. His experience spans a wide range of business domains, including aerospace, environmental, geospatial, insurance, medical and health care, and telecommunications. He has also succeeded in technical endeavors creating reusable frameworks, libraries, and implementation acceleration tools. Vaughn consults and speaks internationally, and has taught his Implementing Domain-Driven Design classes on multiple continents. You can read more about his latest efforts at and follow him on Twitter here: @VaughnVernon.

Recenzii

“With Implementing Domain-Driven Design, Vaughn has made an important contribution not only to the literature of the Domain-Driven Design community, but also to the literature of the broader enterprise application architecture field. In key chapters on Architecture and Repositories, for example, Vaughn shows how DDD fits with the expanding array of architecture styles and persistence technologies for enterprise applications—including SOA and REST, NoSQL and data grids—that has emerged in the decade since Eric Evans’ seminal book was first published. And, fittingly, Vaughn illuminates the blocking and tackling of DDD—the implementation of entities, value objects, aggregates, services, events, factories, and repositories—with plentiful examples and valuable insights drawn from decades of practical experience. In a word, I would describe this book as thorough. For software developers of all experience levels looking to improve their results, and design and implement domain-driven enterprise applications consistently with the best current state of professional practice, Implementing Domain-Driven Design will impart a treasure trove of knowledge hard won within the DDD and enterprise application architecture communities over the last couple decades.”
—Randy Stafford, Architect At-Large, Oracle Coherence Product Development
“Domain-Driven Design is a powerful set of thinking tools that can have a profound impact on how effective a team can be at building software-intensive systems. The thing is that many developers got lost at times when applying these thinking tools and really needed more concrete guidance. In this book, Vaughn provides the missing links between theory and practice. In addition to shedding light on many of the misunderstood elements of DDD, Vaughn also connects new concepts like Command/Query Responsibility Segregation and Event Sourcing that many advanced DDD practitioners have used with great success. This book is a must-read for anybody looking to put DDD into practice.”
—Udi Dahan, Founder of NServiceBus
“For years, developers struggling to practice Domain-Driven Design have been wishing for more practical help in actually implementing DDD. Vaughn did an excellent job in closing the gap between theory and practice with a complete implementation reference. He paints a vivid picture of what it is like to do DDD in a contemporary project, and provides plenty of practical advice on how to approach and solve typical challenges occurring in a project life cycle.”
— Alberto Brandolini, DDD Instructor, Certified by Eric Evans and Domain Language, Inc.
“Implementing Domain-Driven Design does a remarkable thing: it takes a sophisticated and substantial topic area in DDD and presents it clearly, with nuance, fun and finesse. This book is written in an engaging and friendly style, like a trusted advisor giving you expert counsel on how to accomplish what is most important. By the time you finish the book you will be able to begin applying all the important concepts of DDD, and then some. As I read, I found myself highlighting many sections . . . I will be referring back to it, and recommending it, often.”
— Paul Rayner, Principal Consultant & Owner, Virtual Genius, LLC., DDD Instructor, Certified by Eric Evans and Domain Language, Inc., DDD Denver Founder and Co-leader
“One important part of the DDD classes I teach is discussing how to put all the ideas and pieces together into a full blown working implementation. With this book, the DDD community now has a comprehensive reference that addresses this in detail. Implementing Domain-Driven Design deals with all aspects of building a system using DDD, from getting the small details right to keeping track of the big picture. This is a great reference and an excellent companion to Eric Evans seminal DDD book.”
— Patrik Fredriksson, DDD Instructor, Certified by Eric Evans and Domain Language, Inc.
“If you care about software craftsmanship—and you should—then Domain-Driven Design is a crucial skill set to master and Implementing Domain-Driven Design is the fast path to success. IDDD offers a highly readable yet rigorous discussion of DDD’s strategic and tactical patterns that enables developers to move immediately from understanding to action. Tomorrow’s business software will benefit from the clear guidance provided by this book.”
—Dave Muirhead, Principal Consultant, Blue River Systems Group
“There’s theory and practice around DDD that every developer needs to know, and this is the missing piece of the puzzle that puts it all together. Highly recommended!”
—Rickard Öberg, Java Champion and Developer at Neo Technology
“In IDDD, Vaughn takes a top-down approach to DDD, bringing strategic patterns such as bounded context and context maps to the fore, with the building block patterns of entities, values and services tackled later. His book uses a case study throughout, and to get the most out of it you’ll need to spend time grokking that case study. But if you do you’ll be able to see the value of applying DDD to a complex domain; the frequent sidenotes, diagrams, tables, and code all help illustrate the main points. So if you want to build a solid DDD system employing the architectural styles most commonly in use today, Vaughn’s book comes recommended.”
—Dan Haywood, author of Domain-Driven Design with Naked Objects
“This book employs a top-down approach to understanding DDD in a way that fluently connects strategic patterns to lower level tactical constraints. Theory is coupled with guided approaches to implementation within modern architectural styles. Throughout the book, Vaughn highlights the importance and value of focusing on the business domain all while balancing technical considerations. As a result, the role of DDD, as well as what it does and perhaps more importantly doesn’t imply, become ostensibly clear. Many a time, my team and I would be at odds with the friction encountered in applying DDD. With Implementing Domain-Driven Design as our luminous guide we were able to overcome those challenges and translate our efforts into immediate business value.”
—Lev Gorodinski, Principal Architect, DrillSpot.com

Descriere

"For software developers of all experience levels looking to improve their results, and design and implement domain-driven enterprise applications consistently with the best current state of professional practice, Implementing Domain-Driven Design will impart a treasure trove of knowledge hard won within the DDD and enterprise application architecture communities over the last couple decades." -Randy Stafford, Architect At-Large, Oracle Coherence Product Development "This book is a must-read for anybody looking to put DDD into practice." -Udi Dahan, Founder of NServiceBus Implementing Domain-Driven Design presents a top-down approach to understanding domain-driven design (DDD) in a way that fluently connects strategic patterns to fundamental tactical programming tools. Vaughn Vernon couples guided approaches to implementation with modern architectures, highlighting the importance and value of focusing on the business domain while balancing technical considerations. Building on Eric Evans' seminal book, Domain-Driven Design, the author presents practical DDD techniques through examples from familiar domains.Each principle is backed up by realistic Java examples-all applicable to C# developers-and all content is tied together by a single case study: the delivery of a large-scale Scrum-based SaaS system for a multitenant environment. The author takes you far beyond "DDD-lite" approaches that embrace DDD solely as a technical toolset, and shows you how to fully leverage DDD's "strategic design patterns" using Bounded Context, Context Maps, and the Ubiquitous Language. Using these techniques and examples, you can reduce time to market and improve quality, as you build software that is more flexible, more scalable, and more tightly aligned to business goals. Coverage includes * Getting started the right way with DDD, so you can rapidly gain value from it* Using DDD within diverse architectures, including Hexagonal, SOA, REST, CQRS, Event-Driven, and Fabric/Grid-Based* Appropriately designing and applying Entities-and learning when to use Value Objects instead* Mastering DDD's powerful new Domain Events technique* Designing Repositories for ORM, NoSQL, and other databases