Real Concepts + Interview Questions That Actually Get Asked
Most Spring Boot tutorials teach syntax.
But interviews test understanding.
This quick playbook covers what actually matters 👇
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⚡ Core Concepts You Must Know
Dependency Injection (DI) → How Spring manages objects
Auto Configuration → Magic behind spring-boot-starter-*
Spring MVC Flow → Client → Controller → Service → Repository → DB
Bean Lifecycle → How Spring creates & manages objects
Exception Handling → Using @RestControllerAdvice
💼 Real Interview Questions
What happens when an API request hits Spring Boot?
How does auto-configuration work internally?
Difference between @Component, @Service, @Repository?
Why is constructor injection preferred?
What is DispatcherServlet?
🎯 What Companies Actually Look For
Clear concept understanding
Ability to explain flow
Real-world backend thinking
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**I’ve created a complete backend mastery pack with:
**Structured notes
Interview-ready answers
Real scenarios
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