Runtime Model
Working Safely with AI Coding Agents
A practical reflection on how I use ChatGPT, Codex, and Copilot to design first, code second, and reduce the risk of AI-driven development.
Architecture
Runtime Model
Real Problems I Encountered When Developing With AI Agents
A practical account of the real implementation and maintenance problems I ran into while using AI agents for internal business system development.
Runtime Model
AI in Real Development Work
A practical reflection on how AI changed my daily work, why coding agents raise both productivity and risk, and why design matters even more now.
Core Principle
Designing Meaningful Types
Explains how meaningful types help determine when inheritance is structurally appropriate.
Core Principle
Inheritance, Composition, and Meaningful Types
Explores when inheritance and composition fit naturally, and why meaningful types matter more than convenience.
Core Principle
Why Modern Developers Avoid Inheritance
Explores why many modern developers avoid inheritance, examining cultural, historical, and practical factors in business application development.
Core Principle
API Exception Mapping and Validation Strategy
How Cotomy treats API failures and validation through structured HTTP responses and exception mapping.
Core Principle
Inheritance and Composition in Business Application Design
A reflection on inheritance and composition from long-term business system development experience.
Core Principle
Standardizing CotomyPageController for Shared Screen Flows
How to standardize list-style screens with CotomyPageController-based structure.
Runtime Model
Early Architecture Attempts
Early personal development work, architecture experiments, and the operational challenges that eventually led to cloud deployment.
