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Architecture

Architecture is the design of constraints that apply system wide

"When you look at the architecture, you should be pleased by how natural and easayy the solution seems."

  • The quality of the architecture determines the conceptual integrity of the system. This in turn determines the ultimate quality of the system.
  • Without good software architecture, you may have the right problem but the wrong solution. It may be impossible to have successful construction.

General Architectural Quality

  • Good architecture specs are characterized by
    • Discussions of the classes in the system
    • Information hidden in each class
    • Rationales for including and excluding all possible design alternatives

Architecture Components

Programmatic Considerations

  • Program Organization
  • Major Classes
  • Data Design
  • User Interface Design
  • Overengineering Decision

System Considerations

  • Performance
  • Resource Management
  • Scalability

System Protection

  • Error Processing
  • Fault Tolerance
  • Security

Real World Considerations

  • Architectural Feasability
  • Business Rules and Constraints
  • Buy-vs-Build Decisions
  • Reuse Decisions
  • Interoperability
  • Change Strategy

Checklists