Github user michaelandrepearce commented on the issue:
https://github.com/apache/activemq-artemis/pull/1752
@clebertsuconic tbh, i can see the saving on property keys, and address per
session.
Also within the consumer and producer (though for producing the saving
would be on String to SimpleString for the keys so one extra variation needed),
if you think typically a producer would send typically to one or a few
destinations and then send a million of them, like wise on message properties,
if you set one you're most likely to set it all the time, and then again
typically a consumer would see all the same.
The only bit I'm dubious on its benefit is property values.
Lastly on the implementation detail this i think needs some work/cleanup,
though after finding/understanding through the discussion with @franz1981 its
more of a last seen cache/pool so I'm more +1 it, just the name made me to
expect something different at first.
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