August 2018
Intermediate to advanced
372 pages
9h 29m
English
Content preview from Software Architecture with Spring 5.0
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The dependency inversion (DI) principle
It is now time to define the dependency inversion principle:
Modules should depend on abstractions rather than on concrete implementations.
Abstractions represent the high-level details of a module, and the interaction among modules should be done at this level. Low-level details are volatile and ever-evolving. We previously stated that there are no problems with evolved modules, but of course, we don't want to break module interactions because of low-level details, and an excellent way to do this is to use abstractions rather than concrete implementations. The following questions will help you identify how well you are doing:
- Do I have abstractions as part of my modules?
As discussed earlier in this ...
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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.