Spring Framework Event Handling

External

• https://www.baeldung.com/spring-events

Internal

• Spring Framework

Overview

One of application context's capabilities is to handle events. The events are by default synchronous, which has a few advantages, one of them being the fact that the listener is able to participated in the publisher's transaction context.

ContextStartedEvent, ContextStoppedEvent, ApplicationListener.

Custom Events .

Threading Consideration

Spring event handling is single threaded and synchronous in nature. If an event is published, until and unless all receivers get the message, the processes are blocked and the flow will not continue.

Event

Events are instances extending ApplicationEvent.

Publisher

Events can be published using publishers. Any custom publisher should inject an ApplicationEventPublisher object.

Application Event Listener

Listeners should implement the ApplicationListener interface.