[infinispan-issues] [JBoss JIRA] (ISPN-7338) Don't send RemoveExpiredCommand when no expiration listeners are registered

Don't send RemoveExpiredCommand when no expiration listeners are registered --------------------------------------------------------------------------- Key: ISPN-7338 URL: https://issues.jboss.org/browse/ISPN-7338 Project: Infinispan Issue Type: Enhancement Components: Core Affects Versions: 9.0.0.Beta1 Reporter: Radim Vansa Assignee: William Burns Labels: performance Currently dist and repl caches send {{RemoveExpiredCommand}} for each expired entry. That causes unnecessary overhead when there are no expiration listeners registered (expiring the entry at ~same moment on all nodes does not provide too much benefit without listeners). As the command is executed in async thread and locks the entry, in can introduce extra delay to following write operation (or fail it if this has {{Flag.ZERO_LOCK_ACQUISITION_TIMEOUT}}). There is a way to prevent the command using {{ExpirationManager.registerIncomingWrite}} but as this is implemented using a CHM write, it will cause non-trivial overhead and possible contention as well, even in cases the entry is not expired. The only viable workaround ATM is replacing {{ClusterExpirationManager}} with {{ExpirationManagerImpl}} in component registry manually.