Francesco Nigro created ARTEMIS-2844:
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Summary: Improve MQTT subscribe/unsubscribe topic performance
Key: ARTEMIS-2844
URL: https://issues.apache.org/jira/browse/ARTEMIS-2844
Project: ActiveMQ Artemis
Issue Type: Improvement
Components: Broker, MQTT
Affects Versions: 2.14.0
Reporter: Francesco Nigro
MQTT (and not only) is severely effected on its performance while
subscribing/unsubscribing when many topics are existing because:
* SimpleAddressManager::getMatchingBindings/getDirectBindings are performing a
linear search on all the existing Bindings
* the results of the previous matches are saved into a Bindings instance even
if not necessary (note: Bindings perform atomic operations while saving the
matching Binding)
* All the MQTT operations are performed in the Netty event loop
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