Tutorial how to efficiently fix a production issue.
The issue in question is a rounding error in the method
de.pdark.tutorial.hotfix.base.Order.collectOrder(User, long)
de.pdark.tutorial.hotfix.base contains the code with the bug,
de.pdark.tutorial.hotfix.commit* contains each git "commit".
This makes it more efficient for me to write the tutorial.
In the real world, everything would happen in
de.pdark.tutorial.hotfix.base.