Software development is about more than shipping features - it's about building code that stands the test of time and remains adaptable to changing requirements. This book teaches principles of maintainable software design, demonstrating how key patterns apply across REST APIs, front-end state, or tiny scripts.

You’ll see domain logic, data access, and transport layers in action, and learn to manage clarity and flexibility. Through practical examples like splitting monolithic handlers or extracting front-end logic, you'll learn to handle complexity with confidence.

We cover duplication, reusability, and more, showing why some repetition may beat overkill abstractions. By the end, you’ll refine your taste in code, knowing how to create maintainable software in any environment.

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