11.4. Crosstalk's modularity and service coupling

In this section, we'll look at how crosstalk is broken down into modules by package, service type, and contract. We'll see some of the concepts presented in chapter 4 on modularizing code and in the chapter 10 on packaging clean designs that separate areas of concern.

Crosstalk's packages also expose no implementation details, so that accidental coupling of services does not occur. All collaboration between modules happens through publicly exposed interfaces, with well-defined contracts. Let's see how this structure is achieved.