notation to help you notate design patterns and to help you make diagrams that

Notation to help you notate design patterns and to

This preview shows page 61 - 63 out of 517 pages.

notation to help you notate design patterns and to help you make diagrams that show how the classes should work. Note that Chapter 11 is about software architecture whereas prior chapters in Part II are about the Agile development process. We believe in a college course setting that this order will let you start an Agile iteration sooner, and we think the more iterations you do, the better you will understand the Agile lifecycle. However, as Figure 1.9 suggests, knowing design patterns will be useful when writing or refactoring code, since it is fundamental to the BDD/TDD process. Chapter 12 offers practical advice on how to first deploy and then improve performance and scalability in the cloud, and briefly introduces some reliability and security techniques that are uniquely relevant to deploying SaaS. We conclude with an Afterword that reflects on the material in the book and projects what might be next. 1.11 How NOT to Read this Book Don’t skip the screencasts. The temptation is to skip sidebars, elaborations, and screencasts to just skim the text until you find what you want to answer your question. While elaborations are typically for experienced readers who want to know more about what is going on behind the curtain, and sidebars are just short asides that we think you’ll enjoy, screencasts are critical to learning this material. While we wouldn’t say you could skip the text and just watch the screencasts, we would say that they are some of the most important parts of the book. They allow us to express a lot of concepts, show how they interact, and demonstrate how you can do the same tasks yourself. What would take many pages and be difficult to describe can come alive in a two to five minute video. Screencasts allow us to follow the advice of Confucius: “I see and I remember.” So please watch them!
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Learn by doing. Have your computer open with the Ruby interpreter ready so that you can try the examples in the screencasts and the text. We even make it easy to copy-and-paste the code using the service Pastebin , (If you’re reading the ebook, the link accompanying each code example will take you to that code example on Pastebin.) This practice follows the “I do and I understand” observation of Confucius. Specific opportunities to learn by doing are highlighted by a bicycle icon. There are topics that you will need to study to learn, especially in our buzzword-intensive ecosystem of Agile + Ruby + Rails + SaaS + Cloud Computing. Indeed, Figure 13.2 in the Afterword lists nearly 120 new terms introduced in just the first three chapters. To help you learn them, each term is linked to the appropriate Wikipedia article the first time it appears. We also use icons to remind you of the common themes throughout the book, which Figure 1.10 summarizes as a single handy place to look them up.
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  • Spring '19
  • Dr.Marcos

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