I wrote a compendium of software design
A summary with sources of what contributes to good software design
I wrote a compendium of software design launched on August 2, 2023 with 28 votes, #1,509 of 4,347 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
I wrote a compendium of software design is an online collection of software design principles and practices. Launched in August 2023, it serves as a reference resource for designers and developers seeking to understand design concepts and methodologies. The compendium organizes design knowledge in an accessible format, making it useful for anyone looking to deepen their understanding of how software products are structured and designed.
written from the facts on this page · September 2026
From the sources
A good sign of low knowledge duplication is the creation of new classes instead of modifying existing ones when we implement new specifications. To give an example, let's assume we need to implement the following: So far so good. Now let's assume we receive further specifications: If this trend of specifications continues, we will end up having a very long lightUp method and many unit tests just for it. The result will be LightBulb not clearly expressing its intent as well as being a hot spot containing too much knowledge. To prevent this we can spread the lightUp knowledge across the different values of LightBulbState as follows. Now each LightBulbState is responsible for its bit of…from software-design.matteoditucci.com
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