Three Layers of Reconstruction

Domain driven design has not been fully read yet. It can only be described in some parts, and can only be iterated and reconstructed later until the model of this book is obtained.

Software is the carrier of knowledge, and model is the crystallization of domain knowledge

Extrusion knowledge

Generally, the development of complex software requires close cooperation between field experts and software developers. developers can quickly learn field knowledge (but generally cannot quickly become experts ), domain experts may also learn some software knowledge (generally can understand class diagrams, but do not want them to understand UML and usecase). Both parties develop a common domain language (not related to software technology ). The book describes an example of circuit design software, so DDD begins with extrusion knowledge, and natural developers need a good ability to learn quickly.

Iteration and Reconstruction

Its process is iterative and reconstructed. Modeling and writingCodeIntegration, because the poor encoding will make the model take shape and disappear. Therefore, we should hire five veterans who are willing to work with each other, instead of thirty new users. We should not clearly divide people into two layers: modelers andProgramClerk, then Grat his nose and put down the Write Program as coding with contempt.

Three Layers of Reconstruction

From the most subtle code-level microrefactoring to the design-oriented refactoring, the third level is also the highest level of domain-oriented modeling. As developers deepen their understanding of the domain, deeper Domain Models will lead to opportunities for reconstruction.

The third part of the book focuses on restructuring.

Soft Design

Refactoring requires soft design. The book uses the chain structure of bicycles as a metaphor, which requires the designers to have good skills.

Good Model

A good model is like a proper glove, making it easier to adapt to changes. This is the benefit of great efforts.

Application Analysis Mode and Design Mode

These things are stringed in the book.