Use Cases and System Design Examples

You now know the rule, the architecture, the code, and the costs. This lesson answers the practical question: when should you actually use Database per Service? We look at the cases where it fits, the cases where it does not, and two real system shapes.

When the Pattern Fits

The pattern works well when the team and data boundaries are real. Look for these signals:

• Several teams each own a separate service and want to release on their own schedule.
• Services hold very different data shapes, such as orders, documents, and search text.