Why Spring Creates Singleton Beans? | Spring Boot Internals Explained

Published: 16 May 2026
on channel: JavaToVictory Interviews
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Have you ever wondered why Spring Boot creates Singleton beans by default?

In this video, we will clearly understand:

✅ What is Singleton Bean?
✅ Why Spring uses Singleton Scope by default
✅ How Spring creates beans internally
✅ Why Spring reuses same object
✅ Memory Optimization Benefits
✅ Performance Advantages
✅ How @Autowired injects same bean
✅ Thread Safety Concerns
✅ Singleton vs Prototype Scope
✅ REAL Spring Boot Examples
✅ Internal Working of IoC Container

We will also discuss:
✔ ApplicationContext
✔ Bean Lifecycle
✔ Stateless Services
✔ Production Best Practices
✔ Important Interview Questions

🚀 Perfect for:
Spring Boot Developers
Java Developers
Backend Developers
Microservices Interviews
Spring Boot Interview Preparation

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www.JavaToVictory.com

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#SpringBoot
#SingletonBean
#SpringInternals
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#Microservices
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