📝§ Software Architecture

top

§ Software Design

• What is Architecture?

  • Architecture is a special case of Software Design

• § Decisions—decisions are inherent part of software architecture

• Architecture as financial options—how to sell architecture to management

• § Architect role

  • Tone down architecture

  • Architecture/management duality

  • Be wary of wasting time documenting design decisions

  • Architects live in a glass house

  • As an architect, allow the team to get the experience and learn

  • Involve the team into design

  • Software architects should continue coding to get the feedback

• Software Modeling—modeling and documenting architecture

• Functional requirements do not drive architecture—non-functional requirements do.

  • Quality attributes are emergent properties

• Constraints as guide rails

  • Constraints provide consistency

  • Restrictions enhance creativity

• Design Stamina Hypothesis—how spending more time on architecture can make project speed up at later stages.

• Brooks’s law—adding people at late stages makes project later

• Conway’s law—architecture reflects communication structure of organization

  • Make sure the organization is compatible with the product architecture

• Theory Building View of programming

  • As a software architect, describe the theory you built

• Architecture Decision Record

• Not every system needs an architecture

• Presumptive architecture

• Architecture risks can be added as spikes to backlog

• Sign-offs encourage Big Design Up Front

Resources:

• Bass…₂₀₁₃

• Fairbanks₂₀₁₀

• Fowler₂₀₁₅

Backlinks

• 📝 Ask for objections, not agreement
• 📖 Just Enough Software Architecture
• 📝 Organizational context as architectural constraint
• 📝 § Architect role
• 📝 Architect as guard of conceptual integrity
• 📝 Involve the team into design
• 📝 Architects live in a glass house
• 📝 Not every system needs an architecture
• 📝 How to apply architectural knowledge to programming language design?
• 📝 Architecture as what’s most important
• 📝 Architecturally-significant requirements
• 📝 Architecture as a set of important decisions
• 📝 Architecture is a special case of Software Design
• 📝 § Software Design
• 📝 As a software architect, describe the theory you built
• 📝 Bounded rationality
• 📝 Separate storage and query layers
• 📝 Design Stamina Hypothesis
• 📝 Functional requirements do not drive architecture
• 📝 § Software Development
• 📝 § Programming