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From "Jacob Wright (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-1337) Use MD5 for attachment ETag
Date Tue, 08 Nov 2011 01:22:51 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-1337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146015#comment-13146015
] 

Jacob Wright commented on COUCHDB-1337:
---------------------------------------

That's hilarious
                
> Use MD5 for attachment ETag
> ---------------------------
>
>                 Key: COUCHDB-1337
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1337
>             Project: CouchDB
>          Issue Type: Improvement
>    Affects Versions: 1.1.1
>            Reporter: Jacob Wright
>            Assignee: Robert Newson
>            Priority: Minor
>         Attachments: 0001-CouchDB-1337-Use-attachments-md5-as-ETag-if-availabl.patch
>
>
> Currently attachments use the revision number of the document they're attached to for
their ETag. This can be inefficient if many attachments are added, removed, or modified on
the same document. Example: a website's assets might be stored on a document. Whenever one
file is changed every file on the website drops out of cache.
> If we could use the MD5 of the attachment for the ETag then any caches (including the
browser's) will not drop unchanged files, even if the document to which they are attached
is modified.

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