Continuous Refactoring
Updated 2026-08-15
INTRODUCTION
English translation pending.
CORE DEFINITION
Continuous refactoring treats structural improvement as ordinary development work rather than a separate project. Each change alters internal design while preserving external behavior, and the safety net is a test suite that stays green. The core claim is that the cost of a refactoring grows faster than its size, so many small improvements are cheaper than one large one, and they keep the design from decaying in the first place. The qualification is that behavior preservation must be verifiable: without tests, a refactoring is indistinguishable from an unannounced bug fix, and the discipline collapses into churn.
SCAFFOLDING EFFECT
Reduce cognitive load
- Notice the smell: treat awkward code encountered during a task as in scope, not as someone else's problem. - Keep it small: limit each change so it can be reviewed and reverted in one step. - Stay green: run the tests after every step and revert rather than debug a broken refactor.
Anchor fast decisions
Design decay compounds, because each awkward addition makes the next one harder, so the cost of a later rewrite grows faster than the codebase does. Small improvements applied continuously interrupt that compounding at a low price per change, and each one leaves the code easier to modify, which lowers the cost of the next. Behavior-preserving transformations are safe only when the preserved behavior is specified somewhere, which is why the test suite is part of the method rather than an optional extra.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Code_refactoringverified
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