[Solved] Why does Spring prefer to manage Beans as singletons by default? — Ans: To improve performance by reusing the same instance | Spring Boot

Spring Boot - Inversion of Control and Dependency Injection

Why does Spring prefer to manage Beans as singletons by default?

ATo improve performance by reusing the same instance

BTo force developers to write stateless code

CBecause prototype scope is deprecated

DTo avoid memory leaks caused by multiple instances

Step-by-Step Solution

Solution:

Step 1: Understand default Bean scope rationale
Singleton scope improves performance by reusing one instance instead of creating many.
Step 2: Evaluate other options
Singleton does not force stateless code, prototype is not deprecated, and memory leaks depend on usage, not scope.
Final Answer:
To improve performance by reusing the same instance -> Option A
Quick Check:
Singleton default = performance optimization [OK]

Quick Trick: Singleton Beans improve performance by reuse [OK]

Common Mistakes:

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Why does Spring prefer to manage Beans as singletons by default?