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https://issues.apache.org/jira/browse/TS-3683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14582400#comment-14582400
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Susan Hinrichs commented on TS-3683:
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Yes, there are cumulative metrics. And in many circumstances this is sufficient.
The motivation for providing the same in formation on a per-log-entry basis is
to be able to roll up the data in different ways. For example, you might want
to do post analysis to determine the SSL session reuse for clients from Europe
vs clients from South America. Per box statistics are not sufficient in that
case.
> Add a tag to log SSL Session/Ticket HIT as well as TCP connection reused
> ------------------------------------------------------------------------
>
> Key: TS-3683
> URL: https://issues.apache.org/jira/browse/TS-3683
> Project: Traffic Server
> Issue Type: Improvement
> Components: Logging
> Reporter: François Pesce
>
> These tags would be useful for performance metrics collection:
> <%cqtr> The TCP reused status; indicates if this request went through an
> already established connection.
> <%cqssr> The SSL session/ticket reused status; indicates if this request hit
> the SSL session/ticket and avoided a full SSL handshake.
> both of them would display respectively 0 or 1 , if resp. not reused or
> reused.
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