Top Spring Boot Interview Traps in 2026 | Interview Questions and Answers | Code Decode

Описание: In this video of code decode we have uploaded top spring boot interview traps for freshers and experienced developers


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Spring Boot interviews are full of traps — and most developers fall into them without realizing it.

In this video, we go deep into the real mechanics behind Spring Boot and Spring Framework that separate junior answers from senior-level understanding.

You will learn:

• Why Spring Boot applications are multi-threaded and how shared singleton beans can silently break your logic
• The race condition problem and why your fields are never protected automatically
• When AtomicInteger works and when in-memory state is a terrible design in real microservices
• What singleton actually means in Spring and how bean scopes really behave
• Why prototype beans injected into singletons do not work the way most people expect
• The difference between field injection, setter injection, and constructor injection
• Why constructor injection is the preferred approach in production systems
• How proxy-based AOP works under the hood
• Why Transactional fails on private methods and self-invocation
• How to correctly design transactional boundaries across services
• How Spring Boot auto-configuration really works
• What interviewers expect you to know about starters, conditions, and component scanning
• Why Actuator is much more than health checks
• What production-ready actually means in real systems
• How startup time, lazy initialization, and native images affect modern Spring Boot apps

This is not surface-level theory.

These are the exact pitfalls that cause bugs in production, failed interviews, and late-night debugging sessions.

If you are preparing for:

Java backend interviews
Senior Spring Boot roles
Microservices architecture discussions
System design rounds
Production debugging scenarios

this video will give you the edge.

Watch till the end for mental models, real-world rules, and interview-ready explanations you can reuse confidently.






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