Error Handling Stops Scaling When It Is Treated as a Local Coding Habit

Error Handling Stops Scaling When It Is Treated as a Local Coding Habit Many systems become hard to maintain later not because the business is inherently complex, but because error handling was never designed as part of the system. At prototype stage, error handling is often just "bubble it up if something fails." But once a system enters long-term evolution, failure paths stop being local control flow. They carry retry decisions, degradation behavior, alert routing, user responses, troubleshoot