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From "clebert suconic (JIRA)" <>
Subject [jira] [Closed] (ARTEMIS-1374) AMQP: Improve transfer tag generation and add tag pooling
Date Thu, 31 Aug 2017 19:10:07 GMT


clebert suconic closed ARTEMIS-1374.

> AMQP: Improve transfer tag generation and add tag pooling
> ---------------------------------------------------------
>                 Key: ARTEMIS-1374
>                 URL:
>             Project: ActiveMQ Artemis
>          Issue Type: Improvement
>          Components: AMQP
>    Affects Versions: 2.2.0
>            Reporter: Timothy Bish
>            Assignee: Timothy Bish
>             Fix For: 2.3.0
> The broker currently generates a new transfer tag for each outbound message using a long
value that is converted to a hex string and then encoded to a UTF-8 byte array.  We can optimize
this generation by just encoding the long into a byte array directly thereby generating less
garbage and providing a significant performance boost to that operation.
> The broker can also cache previously generated tags once a message is settled and reuse
them on a future send to further reduce the amount of garbage created on dispatch.  

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