Of course we want to eliminate complexity from our designs. But when trying to do a simple design, we must be very careful to avoid the trap of Simplistic Designs. A simplistic software design may be one that focuses only on present requirements and ignores future needs such as maintainability, extensibility and reusability.
What do you think? How do you cope with complexity in software systems? Please share your experience in the comments below. One can talk of these concept and apply them also do not know exactly how yet. I would like to see case studies or applications of these principles to multiple designs and their evaluation. Thanks, Putcha. In my future posts I will try to illustrate software design principles with more concrete examples.
First, by fairly strict architecture peer reviews on any major design. Add to that, simplicity is driven from the top down in our group. Everything accounted for is questioned. Every design pattern is questioned. Finally, architects participating in the requirements gathering process. We help refine requirements so that we have time to plan and so that we have a chance to help guide the discussions.
Thanks, Matt. I agree with the importance of reviews. We could say that complexity is always relative: Complex in relation to what alternative? I talk more about that in my post about Effective Design Reviews:. Unfortunately, people have a tendency to ask for a specific solution rather than just outlining the problem.
I agree, Gene. Hayim, I just stumbled across your blog. This is really, really good stuff. I think over-engineering and feature creep is all too common in most B2B software apps. I hate it. Thanks, Michael. However, this is rarely the case where hardware and network changes are involved.
Adding security, availability or performance to an existing system usually requires a rewrite. The critical thing is to understand the system. It can only make the task look easy when the task is understood. Simplicity is relative, not absolute. Thanks, Anthony. But, as you say, some people have a simplistic approach to Problem Solving, and try to start solving a problem even before they fully understand it…. As an example, to defer the decision about a choice of database will probably require a design which hides that decision within a component that abstracts the persistence interface.
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