May 2007
Intermediate to advanced
637 pages
14h 8m
English
book
Pattern-Oriented Software Architecture: A Pattern Language for Distributed Computing, 4th Volume
by Frank Buschmann, Kevlin Henney, Douglas C. Schmidt
Content preview from Pattern-Oriented Software Architecture: A Pattern Language for Distributed Computing, 4th Volume
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Chapter 18. Adaptation and Extension
A set of pluggable adapters © Frank Buschmann
The only constant in life is change! This wisdom from the 17th century French author Francçois de la Rochefoucauld seems particularly true of software. Software is a 'living thing.' The ability of applications and components to adapt to specific environments, extend to meet customer-specific requirements, and evolve over their lifetime, can be a deciding factor for their long-term use and success. This chapter presents thirteen patterns that support developers in building software that is open to adaptation, extension, and evolution.
No single profile covers either the types of modern applications developed or the range of customers for which they are developed. Some applications are specifically developed for a single customer, whereas others are developed as products with a mass market in mind. Although some applications are targeted at a single customer, repeat business for the customer—or for similar applications sought by other customers—can motivate and justify the definition of a common base for the applications to built upon. Even if multiple customers can benefit from a particular software system or infrastructure, each often has unique and specific requirements not yet supported by default. For example:
Out-of-band extensions. Customers sometimes request additional algorithms or services that ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.