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http://jira.dspace.org/jira/browse/DS-285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Larry Stone resolved DS-285.
----------------------------
Resolution: Fixed
Fix Version/s: 1.6.0
Fix committed in revision 4417; it only takes effect for requests from
identified spiders, and/or anonymous Bitstream requests, to prevent problems of
caching content available only to authorized users.
> Item and Bitstream pages do not provide Last-Modified HTTP header, nor
> recognize If-Modified-Since
> --------------------------------------------------------------------------------------------------
>
> Key: DS-285
> URL: http://jira.dspace.org/jira/browse/DS-285
> Project: DSpace 1.x
> Issue Type: Bug
> Components: XMLUI
> Affects Versions: 1.5.2, 1.6.0
> Environment: n/a
> Reporter: Larry Stone
> Assignee: Larry Stone
> Fix For: 1.6.0
>
> Attachments: ds-285-diffs.txt, ds-285-new.zip
>
>
> It is important to use the HTTP Last-Modified/If-Modified-Since conventions
> to help Web crawlers avoid requesting and downloading resources that haven't
> changed since their last visit -- it saves time and CPU load for the DSpace
> site too. The JSPUI implements this protocol on /handle and /bitstream
> servlets, since the Item splash page and Bitstream downloads are responsible
> for most of the load.
> The XMLUI needs to do this too:
> 1. Requests that return the content of an Item or Bitstream must return a
> "Last-modified" header with the Item's last-modified date
> 2. When receiving a request with an "If-Modified-Since" header, first compare
> that date to the Item's last-modified; if the header is later, return a 304
> status instead of processing the request.
> Note that the XMLUI's Sitemap implementation already does the right thing.
> I'll look into implmenting this for 1.6 if nobody else jumps on it first, but
> right now I only have time to post it.
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