Splitting out a project into multiple crates reduces what needs to be recompiled during development. I tend to break out areas of my application that aren't going to change regularly so I'm only having to rebuild the main application.
In a production scenario where you're probably building your application in some CI environment, unless you cache the release build artifacts to re-use when applicable, the entire project will be rebuilt every run.
It’s honestly my biggest issue right now during development. I’m refactoring into a “vertical slice” architecture and then will try crating by feature… fingers crossed.
Splitting out a project into multiple crates reduces what needs to be recompiled during development. I tend to break out areas of my application that aren't going to change regularly so I'm only having to rebuild the main application.
In a production scenario where you're probably building your application in some CI environment, unless you cache the release build artifacts to re-use when applicable, the entire project will be rebuilt every run.