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Spring / Spring AOP

Explain the differences between concern and cross-cutting concern in spring AoP.

The concern is behavior that we want to have in a particular module of an application. A concern may be defined as a functionality we want to implement.

The cross-cutting concern is a concern which is applicable throughout the application and it affects the entire application. For example, logging, security and data transfer is applicable for every module of an application hence they are cross-cutting concerns.

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