Database per Service Pattern — Spring Technical Interview Questions & Answers

Why each microservice owns its own data.

Database per Service Pattern

  • Database per Service Pattern (micro) is a Spring topic. In plain words you use it for a short Database per Service Pattern micro example in a small REST app. Don’t start with a slogan — start with that picture.
  • Smallest example: the smallest Database per Service Pattern micro example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Database per Service Pattern (micro).
  • From the example next to this theory: Why each microservice owns its own data.
  • Trap: only saying “Database per Service Pattern micro” with no example. Fix that before you talk about advanced Spring.
  • Viva: what is Database per Service Pattern (micro)? Then show the smallest Database per Service Pattern micro example you can type. Then name the trap.

Technical Interview Tip: What is Database per Service Pattern (micro)? Show this: the smallest Database per Service Pattern micro example you can type. Trap: only saying “Database per Service Pattern micro” with no example.

Code Examples for Database per Service Pattern

Database per Service Pattern — working example

// Topic: Database per Service Pattern
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
class TopicController {
  @GetMapping("/api/topic")
  String topic() {
    return "Spring Boot: Database per Service Pattern";
  }
}

Database per Service Pattern: GET /api/topic returns this title string.

How to Explain Database per Service Pattern to an Interviewer

What is Database per Service Pattern (micro)?

Used for a short Database per Service Pattern micro example a small REST app Not just the heading

Give one small example of Database per Service Pattern (micro).

the smallest Database per Service Pattern micro example you can type Why each microservice owns its own data

What mistake do beginners make with Database per Service Pattern (micro)?

only saying “Database per Service Pattern micro” with no example Show the fix

Where do you use Database per Service Pattern (micro)?

a small REST app a short Database per Service Pattern micro example