Cache and Cache Manger events in CDI

In case you haven’t heard about CDI events, here is a really quick example:

When Waiter receives an order - he fires a CDI event. On the other hand Barista acts as a listener for ordered coffees (@CoffeeOrdered and @Observes). As a result Barista and Waiter are loosely coupled and moreover they don’t know anything about each other.

Now let’s complicate this situation a little bit…​ Let’s assume that when Waiter is passing an order to Barista, he might be actually busy processing another order. So let’s introduce a little buffer between them - Waiter puts an order into the Cache and later on - Barista takes it and prepares our delicious coffee…​

As you can see - introducing CDI improved the service a lot. Now Waiter does not hurry Barista with the orders. This is why they serve the best espresso in the world there…​

They have also a lot more time to think about other improvements (and to be honest…​ I think they will introduce CacheEntryModifiedEvent, CacheEntryRemovedEvent and CacheStartedEvent really shortly)…​ Or perhaps they’ll find some other ideas in Infinispan’s manual?