E382b9e382b3e383bce38397 Articles

Understanding Spring Boot Bean Scopes - When to Use singleton, prototype, request, and session

Explains the behavior and proper use of Spring Boot's five Bean scopes (singleton/prototype/request/session/application). Also covers the pitfalls of injecting prototype beans into singletons and how to resolve them using ObjectProvider and @Lookup, with implementation examples.

2026-05-25