Domain-Driven Design: Tackling Complexity in the Heart of Software

Fifteen. Distillation

—James Clerk Maxwell, A Treatise on Electricity and Magnetism, 1873

These four equations, along with the definitions of their terms and the body of mathematics they rest on, express the entirety of classical nineteenth-century electromagnetism.

How do you focus on your central problem and keep from drowning in a sea of side issues? A LAYERED ARCHITECTURE separates domain concepts from the technical logic that makes a computer system run, but in a large system, even the isolated domain may be unmanageably complex.

Distillation is the process of separating the components of a mixture to extract the essence in a form that makes ...