Keeping unread notifications relevant is crucial in systems where notifications can change or get updated over time.
To address this, it is important to structure the code in a robust and expandable way, with a focus on managing existing notifications and incorporating new ones effectively.
The process involves updating existing notifications with new information, ensuring that only relevant and current notifications are displayed to users.
A Java implementation example is provided to showcase how this structure can be applied in practice, emphasizing the importance of handling notification updates and relevancy checks.