java

I am upset every time I see a service calling another service when their business logic is not related to each other. Think about creating an entry in a security audit log or sending an email notification to the user once someone leaves a comment to their blog post. Calling these methods directly from a comment service would lead to a tightly coupled code which is hard to maintain and refactor.

A well-known solution to this problem is using aspect-oriented programming (AOP). However, you are usually limited to the original function arguments or its return value at most, having no access to the intermediate calculations. Before you try to refactor the code, introducing a new method just for a more suitable join point, let me show you another way first.