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Fixes #3169 : Track event listeners keyed by type to allow earlier event firing veto #3170

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@SamuelBussmann
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Thank you for the fix.
But doesn't InvocationScopedEventSink.fireOrdered still block on all events if any ordered listener was registered?
Maybe skip events without interested listeners and just consume the queue entry?

@@ -86,8 +87,8 @@ public void onEvent(CacheEvent<? extends K, ? extends V> event) {
return listener;
}

public boolean isForEventType(EventType type) {

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Why this isForEventType check removed?

@@ -40,12 +40,10 @@
@Override
public void run() {
for(EventListenerWrapper<K, V> listenerWrapper : listenerWrappers) {
if (listenerWrapper.isForEventType(cacheEvent.getType())) {

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Why this isForEventType check removed?

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listenerWrappers are already correctly preselected to only contain relevant entries from *syncListenersList.get(event.getType()) ?

@chrisdennis
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Thank you for the fix.
But doesn't InvocationScopedEventSink.fireOrdered still block on all events if any ordered listener was registered?
Maybe skip events without interested listeners and just consume the queue entry?

@SamuelBussmann you're right... we should be able to pull this higher and eliminate a lot more work. Let me move this back to draft and until I get time to rework it.

@chrisdennis chrisdennis marked this pull request as draft June 14, 2023 15:21
@SamuelBussmann
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SamuelBussmann commented Jun 14, 2023

@SamuelBussmann you're right... we should be able to pull this higher and eliminate a lot more work. Let me move this back to draft and until I get time to rework it.

Just add a filter, whether any listener is interested in this event at all? That should keep most of the events from even getting created.
And then a further optimization would be to group events by ordered listener to let the other events get past. But this will get tricky fast with Listeners implementing multiple events...

SamuelBussmann added a commit to SamuelBussmann/ehcache3 that referenced this pull request Sep 26, 2023
Fixes ehcache#3169 : Track event listeners keyed by type to allow earlier event
firing veto ehcache#3170
SamuelBussmann added a commit to SamuelBussmann/ehcache3 that referenced this pull request Jul 18, 2024
Fixes ehcache#3169 : Track event listeners keyed by type to allow earlier event
firing veto ehcache#3170
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3 participants