Basics of Spring Bean Scopes

Bean Scopes

1) Singleton
  - The default scope of every bean is singleton.
  - One instance per context definition
  - Be careful with static data

2) Prototype
  - New instance every time it is referenced
  - Definitions is stored in factory, instances are not
  - Very useful for transient data or types that flex based on application
    state

  3)Session
   - Applies to web environment only
   - One instance of bean per user session
   - Definition stored in bean factory, instance is not

  4)Request
    - Applies to web environment only
    - One instance per request
    - Definition stored in bean factory, instance is not

Below mentioned example shows configuring bean named "Worker" to prototype bean

        @Bean
@Scope("prototype")
public Worker worker(){
return new Worker(greetingText);
}