Design Patterns Overview Design patterns are proven solutions to recurring software design problems. They provide a shared vocabulary for discussing design and capture collective wisdom refined through decades of real-world use. Core Philosophy: Patterns are templates you adapt to your context, not blueprints to copy. Use the right pattern when it genuinely simplifies your design—not to impress or over-engineer. Foundational Principles These principles underpin all good design: | Principle | Meaning | Violation Symptom | |-----------|---------|-------------------| | Encapsulate What Varies |…