[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Paging, lastPageTransaction, and duplicate detection.

[clebert.suconic@jboss.com]

One thing that I realized by accident today:

The duplicate detection is having a deep performance impact on paging.

With the LastPage stuff we would only add one record per-page, and delete it as soon as we had the confirmation of commit, having a minimal impact on the journal.

The duplicateID however, is storing one extra record perMessage. I know we will have the circularID and stuff, but that is just not as optimal wise as what we had before.

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