Allow MessageEvictionStrategy to evict more than one MessageReference in
evictMessage(LinkedList message) method
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Key: AMQ-871
URL: https://issues.apache.org/activemq/browse/AMQ-871
Project: ActiveMQ
Issue Type: Improvement
Components: Broker
Reporter: Mathew Kuppe
Attachments: evictMultipleMessages-patch.txt
For slow consumers every time a single message is added to a TopicSubscription
where the pending message limit is reached, a new call to evictMessage is made.
To allow for more flexible and efficient means of evicting messages it would be
nice to be able to evict multiple messages in one call to evictMessage. This
allows new MessageEvictionStrategy implementations to evict based on age of
messages (eg. evict all messages in the pending message list that are older
than x ms), duplicate messages (evict all messages that are redundant based on
newer messages currently in the pending message list) etc. As a single call to
the evictMessage method may have the opportunity to reduce the size of the
pending message list by more than one it means that the next message added to
the TopicSubscription may not need to have to call the evictMessage again.
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