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https://issues.apache.org/jira/browse/TS-4989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15589908#comment-15589908
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Bryan Call edited comment on TS-4989 at 10/19/16 9:27 PM:
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https://tools.ietf.org/html/rfc7234#section-5.1 :
{noformat}
The presence of an Age header field implies that the response was not
generated or validated by the origin server for this request.
However, lack of an Age header field does not imply the origin was
contacted, since the response might have been received from an
HTTP/1.0 cache that does not implement Age.
{noformat}
https://tools.ietf.org/html/rfc7234#section-4.2.3 :
{noformat}
4.2.3. Calculating Age
The Age header field is used to convey an estimated age of the
response message when obtained from a cache. The Age field value is
the cache's estimate of the number of seconds since the response was
generated or validated by the origin server.
{noformat}
was (Author: bcall):
https://tools.ietf.org/html/rfc7234#section-5.1 :
{noformat}
The presence of an Age header field implies that the response was not
generated or validated by the origin server for this request.
However, lack of an Age header field does not imply the origin was
contacted, since the response might have been received from an
HTTP/1.0 cache that does not implement Age.
{noformat}
> Don't add Age: header to requests not served from cache
> -------------------------------------------------------
>
> Key: TS-4989
> URL: https://issues.apache.org/jira/browse/TS-4989
> Project: Traffic Server
> Issue Type: Bug
> Components: Core
> Reporter: David Carlin
> Labels: yahoo
>
> You can sometimes see Ages of 0,1,2,etc.. - the time it took to process a
> request - for requests not served from cache. Causes confusion.
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