book

Domain-Driven Design Distilled, 1/e

by Vaughn Vernon

May 2016

Intermediate to advanced

176 pages

3h 36m

English

Addison-Wesley Professional

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Who Is This Book For?What This Book CoversConventions
Will DDD Hurt?Good, Bad, and Effective DesignStrategic DesignTactical DesignThe Learning Process and Refining KnowledgeLet’s Get Started!
Domain Experts and Business DriversCase StudyFundamental Strategic Design NeededChallenge and UnifyDeveloping a Ubiquitous LanguagePutting Scenarios to WorkWhat about the Long Haul?ArchitectureSummary

What Is a Subdomain?Types of SubdomainsDealing with ComplexitySummary
Kinds of MappingsPartnershipShared KernelCustomer-SupplierConformistAnticorruption LayerOpen Host ServicePublished LanguageSeparate WaysBig Ball of MudMaking Good Use of Context MappingRPC with SOAPRESTful HTTPMessagingAn Example in Context MappingSummary
Why UsedAggregate Rules of ThumbRule 1: Protect Business Invariants inside Aggregate BoundariesRule 2: Design Small AggregatesRule 3: Reference Other Aggregates by Identity OnlyRule 4: Update Other Aggregates Using Eventual ConsistencyModeling AggregatesChoose Your Abstractions CarefullyRight-Sizing AggregatesTestable UnitsSummary
Designing, Implementing, and Using Domain EventsEvent SourcingSummary
Event StormingOther ToolsManaging DDD on an Agile ProjectFirst Things FirstUse SWOT AnalysisModeling Spikes and Modeling DebtIdentifying Tasks and Estimating EffortTimeboxed ModelingHow to ImplementInteracting with Domain ExpertsSummary

Content preview from Domain-Driven Design Distilled, 1/e

Chapter 5. Tactical Design with Aggregates

So far I have discussed strategic design with Bounded Contexts, Subdomains, and Context Maps. Here you see two Bounded Contexts, the Core Domain named Agile Project Management Context and a Supporting Subdomain that provides collaboration tools through Context Mapping integration.

But what about the concepts that live inside a Bounded Context? I’ve touched on these, but I will next cover them in more detail. They are likely the Aggregates in your model.