Book Image

Polished Ruby Programming

By : Jeremy Evans
Book Image

Polished Ruby Programming

By: Jeremy Evans

Overview of this book

Anyone striving to become an expert Ruby programmer needs to be able to write maintainable applications. Polished Ruby Programming will help you get better at designing scalable and robust Ruby programs, so that no matter how big the codebase grows, maintaining it will be a breeze. This book takes you on a journey through implementation approaches for many common programming situations, the trade-offs inherent in each approach, and why you may choose to use different approaches in different situations. You'll start by refreshing Ruby fundamentals, such as correctly using core classes, class and method design, variable usage, error handling, and code formatting. Then you'll move on to higher-level programming principles, such as library design, use of metaprogramming and domain-specific languages, and refactoring. Finally, you'll learn principles specific to web application development, such as how to choose a database and web framework, and how to use advanced security features. By the end of this Ruby programming book, you’ll be a well rounded web developer with a deep understanding of Ruby. While most code examples and principles discussed in the book apply to all Ruby versions, some examples and principles are specific to Ruby 3.0, the latest release at the time of publication.
Table of Contents (23 chapters)
Section 1: Fundamental Ruby Programming Principles
Section 2: Ruby Library Programming Principles
Section 3: Ruby Web Programming Principles

Structuring with monoliths, microservices, and island chains

All applications have structures, whether they're intentional or not. In general, it's best to choose an intentional structure based on specific application requirements. In terms of structuring your application processes, there are two common approaches. One approach is using a single monolith, while another is using many separate microservices. There's also a less common approach that can work well in some application types, which we'll refer to as the island chain approach.

With the monolith approach, all application code is managed in the same repository, all application data is stored in the same database, and all parts of the application run in the same process. This is the simplest approach in terms of management. It requires little to no coordination to handle changes to other parts of the system since, in a monolithic system, any change to any place in the system can usually occur atomically...