gof-design-patterns-23

What problem does it solve?

Teams and engineers often struggle to choose which classical design pattern best fits a specific object-oriented design problem, leading to inconsistent architecture and over- or under-engineering. This Skill provides a decision-oriented frame to translate concrete design challenges into pattern candidates and actionable trade-offs.

Core Features & Use Cases

• Ten-category decision framework: Reverse-index patterns by the design thinking they support (e.g., "分けて考える", "状態を管理する") so you can search by problem, not by pattern name.
• Pattern-role mapping and trade-offs: For each candidate pattern, map the typical "roles" (participants), expected benefits, and common costs or pitfalls to guide application and review.
• Practical application scenarios: Use during code review, refactoring, architecture design, or learning sessions to recommend patterns, explain why they fit, and provide implementation hints with Java-oriented examples.

Quick Start

Analyze my design concern and recommend candidate GoF patterns from the ten-category framework, list the mapping of pattern roles to my domain, and summarize key trade-offs and a suggested implementation approach.