August 2018
Beginner
594 pages
22h 33m
English
Content preview from Software Architect's Handbook
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Temporal cohesion
Temporal cohesion exists when the elements of a module are grouped together based on when they are processed. This can occur when different elements are grouped together simply because they need to be executed at a single moment in time. This is another type of low cohesion.
An example of temporal cohesion is grouping a bunch of elements together because they are all related to system startup, system shutdown, or the handling of a system error. Even though the elements are related temporally, they are only weakly related to each other. This makes the module harder to maintain and reuse.
The elements should be grouped into different modules, with each module designed for a single purpose.
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