Java: DTOs and Entities

Bean scopes define the lifecycle and visibility of beans.

Spring Boot bean scopes, such as Singleton and Prototype, determine the lifecycle and instantiation strategy of beans. Singleton scope means a single instance is shared across the container, suitable for stateless services. Prototype scope creates a new instance each time a bean is requested, which is useful for stateful components like session data. For instance, in a shopping cart application, a cart bean might be Prototype-scoped to handle individual user sessions.