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As a developer, you may inherit projects built on existing codebases with design patterns, usage assumptions, infrastructure, and tooling from another time and another team. Fortunately, there are ways to breathe new life into legacy projects so you can maintain, improve, and scale them without fighting their limitations.
Re-Engineering Legacy Software is an experience-driven guide to revitalizing inherited projects. It covers refactoring, quality metrics, toolchain and workflow, continuous integration, infrastructure automation, and organizational culture. You'll learn techniques for introducing dependency injection for code modularity, quantitatively measuring quality, and automating infrastructure. You'll also develop practical processes for deciding whether to rewrite or refactor, organizing teams, and convincing management that quality matters. Core topics include deciphering and modularizing awkward code structures, integrating and automating tests, replacing outdated build systems, and using tools like Vagrant and Ansible for infrastructure automation.
This book is written for developers and team leads comfortable with an OO language like Java or C#.
Chris Birchall is a senior developer at the Guardian in London, working on the back-end services that power the website.
A comprehensive guide to turning legacy software into modern, up-to-date projects!
I learn something new every time I read it.
The book I wanted to read years ago.
A very practical guide to one of the most difficult aspects of software development.
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