Patterns, Principles, and Practices of Domain-Driven Design

11 Introduction to Bounded Context Integration

WHAT’S IN THIS CHAPTER?

• How to integrate bounded contexts that form a distributed system
• Fundamental challenges inherent to building distributed systems
• Understanding how the principles of Service Oriented Architecture (SOA) can help to build loosely coupled bounded contexts and independent teams
• Addressing nonfunctional requirements while keeping an explicit event-driven domain model using reactive DDD

Wrox.com Code Downloads for This Chapter

The wrox.com code downloads for this chapter are found at www.wrox.com/go/domaindrivendesign on the Download Code tab. The code is in the Chapter 11 download and individually named according to the names throughout the chapter.

After identifying the bounded contexts in your system (as discussed in Chapter 6, “Maintaining the Integrity of Domain Models with Bounded Contexts,” and Chapter 7, “Context Mapping”), the next step is to decide how you will integrate them to carry out full business use cases. One of the big challenges you face in this process is successfully designing a robust distributed system. For example, each step of placing an order, billing the customer, and arranging shipping may belong to a different bounded context running as a separate piece of software on a separate physical machine or cloud instance. In this chapter, you learn about fundamental concepts in distributed computing that allow you to retain explicit domain concepts while gracefully dealing with nonfunctional ...