Use Scoped services more (and Transient services less) in app-lib?

[ivarne]

Description

Singleton services is perceived by developers as more efficient, because they don't need to be initialised for every request.

The big drawback is that transient service dependencies inherit their singleton scope, which is really bad if someone in a transient dependent service decide to store user data in a class variable causing it to be reused cross request. If service scope validation is configured, we get an exception when a singleton service references a scoped service, making these kind of issues way more obvious, if we used scoped services more.

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Acceptance Criterias

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