Book Image

arc42 by Example

By : Dr. Gernot Starke, Michael Simons, Stefan Zörner, Ralf D. Müller
Book Image

arc42 by Example

By: Dr. Gernot Starke, Michael Simons, Stefan Zörner, Ralf D. Müller

Overview of this book

When developers document the architecture of their systems, they often invent their own specific ways of articulating structures, designs, concepts, and decisions. What they need is a template that enables simple and efficient software architecture documentation. arc42 by Example shows how it's done through several real-world examples. Each example in the book, whether it is a chess engine, a huge CRM system, or a cool web system, starts with a brief description of the problem domain and the quality requirements. Then, you'll discover the system context with all the external interfaces. You'll dive into an overview of the solution strategy to implement the building blocks and runtime scenarios. The later chapters also explain various cross-cutting concerns and how they affect other aspects of a program.
Table of Contents (9 chapters)
Free Chapter
1
Acknowledgements
8
VII - macOS Menu Bar Application

II.3 Context

You want to know the boundaries and scope of the system to distinguish it from neighboring systems. The context identifies the systems that have relevant external interfaces.

3.1 Business Context

Note

You want to identify all the neighboring systems and the different kinds of (business) data or events that are exchanged between your system and its neighbors.

The following table lists all the neighboring systems, along with a description of each:

Figure 2.7: Business context

3.2 Deployment Context

Note

You will also want to know about the technical or physical infrastructure of your system, along with the physical channels or protocols.

The following diagram shows the participating computers (nodes) and their technical connections, along with the major artifact of HtmlSC, hsc-plugin-binary:

Figure 2.8: Deployment context

The following table explains the purpose of each node in hsc-plugin-library:

Figure 2.9: Description of the components of the...