architecture

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

• Code Complete Checklist