September 2003
Intermediate to advanced
368 pages
10h 16m
English
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Core Development Concepts
When evaluating the end product of any enterprise development project, we can score it on four factors: Extensibility, Scalability, Reliability, and Timeliness. Different projects emphasize these factors to different degrees: NASA programmers will emphasize reliability above all else, giving appropriately short shrift to timeliness concerns. A startup may emphasize scalability and timeliness, with concerns over extensibility put off for the next release.[3]
Obviously, each of the four issues affects the others at some level. A highly extensible system might be made more scalable by plugging in higher performance components, and time spent up front building support for scalability will pay off in timely deployment of later versions. The important thing to know is that design patterns can improve performance in all four areas. In this book, we focus on extensibility and scalability in particular.
Extensibility
The one constant in software development is that requirements always change. With each version of a product, there are bugs to fix and ideas to develop into new features. These days, particularly in business programming, requirements often change between the time a product is designed and the time it is released. When requirements do change, software divides into two categories: the kind that can be easily extended and the kind that can’t. Unfortunately, determining in advance which category your program fits into is difficult. If you were trying to ...
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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.