The Twelve-Factor App methodology, introduced by Adam Wiggins in 2011, provides a set of best practices for developing software-as-a-service (SaaS) applications. It focuses on principles such as using declarative formats for setup automation, minimizing divergence between development and production environments, and ensuring maximum portability between execution environments. The methodology includes twelve factors that address various aspects of software development, from codebase management to service disposal, and is designed to help developers build applications that are scalable, maintainable, and resilient in cloud-native environments[2][3][5].
This book, now in its second edition, provides a detailed catalog of refactoring techniques. It explains how to identify 'code smells' and apply behavior-preserving transformations to improve the design and maintainability of software. The book includes examples in Java and JavaScript, and it emphasizes the importance of testing and small, incremental changes to minimize the risk of introducing errors. The second edition reflects the changes in the programming landscape over the past two decades and includes new examples and techniques[2][4][5].
The Agile Manifesto, created in 2001 by 17 software developers, is a foundational document that defines four core values and 12 principles for Agile software development. It emphasizes the importance of individuals and interactions over processes and tools, working software over comprehensive documentation, customer collaboration over contract negotiation, and responding to change over following a plan. The manifesto aims to provide a more efficient, flexible, and customer-centric approach to software development, contrasting with traditional waterfall methods[1][3][5].
The 12-Factor App methodology is a set of best practices for developing modern software applications. It was created by developers at Heroku in 2012 to help build scalable and resilient SaaS applications. The methodology consists of 12 principles: Codebase, Dependencies, Config, Backing Services, Build, Release, Run, Processes, Concurrency, Disposability, Dev/Prod Parity, and Logs. These principles aim to improve collaboration among developers, avoid software erosion, and ensure the application's scalability and security[1][4][5].
In this episode of Book Overflow, Carter and Nathan discuss The Twelve-Factor App, a free-to-read manifesto on the fundamentals of building a modern web application. Join them as they discuss scalability, statelessness, and the proper way to handle logs!
-- Books Mentioned in this Episode --
Note: As an Amazon Associate, we earn from qualifying purchases.
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The Twelve-Factor App
https://12factor.net/
Web Scalability for Startup Engineers by Artur Ejsmont
https://amzn.to/3AWkfKp (paid link)
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Spotify: https://open.spotify.com/show/5kj6DLCEWR5nHShlSYJI5L
Apple Podcasts: https://podcasts.apple.com/us/podcast/book-overflow/id1745257325
X: https://x.com/bookoverflowpod
Carter on X: https://x.com/cartermorgan
Nathan's Functionally Imperative: www.functionallyimperative.com
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Book Overflow is a podcast for software engineers, by software engineers dedicated to improving our craft by reading the best technical books in the world. Join Carter Morgan and Nathan Toups as they read and discuss a new technical book each week!
The full book schedule and links to every major podcast player can be found at https://www.bookoverflow.io
Book Overflow 
