Technical Debt Measurement and Strategy
V elocity in software engineering does not decrease linearly; it decays exponentially as unmanaged complexity accumulates. For engineering leads and CTOs, the challenge is rarely acknowledging that …
Zero Downtime Monolith to MSA Migration
L egacy monolithic systems often reach a tipping point where vertical scaling becomes cost-prohibitive and feature velocity degrades due to tight coupling. A "Big Bang" rewrite—halting de…
Managing State Complexity in OOP vs Functional Architectures
I n modern distributed systems, the debate between Object-Oriented Programming (OOP) and Functional Programming (FP) often devolves into syntactic preferences. However, from an engineering leadershi…
Dart: 自作Extension Methodが「Undefined」になる理由とimportスコープの罠
「確かに定義したはずなのに、IDEがメソッドを認識しない」。Flutter開発において、コードの可読性を劇的に向上させる Extension Method（拡張メソッド） を導入しようとした際、多くのエンジニアがこの壁に直面します。特に、大規模なリファクタリング中に utils.dart に切り出した瞬間、参照元で赤い波線（Red Squiggly Lines）が消えない現象は、コンパイラ…