For example, if your SOA entry point is business centric, you can defer loose coupling via the ESB, even though the ESB is included in your reference architecture.
Afferent coupling represents the count of how many other classes reference the current class, via either fields or parameters.
而传入耦合则表示其他类通过字段或参数引用当前类的次数。
3
Reference cycles between classes in different packages or projects are generally considered to be a bad programming practice (they introduce tighter coupling between components).