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From "Paul Joseph Davis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-687) Add md5 hash to _attachments properties for documents
Date Thu, 19 May 2011 13:43:47 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13036185#comment-13036185
] 

Paul Joseph Davis commented on COUCHDB-687:
-------------------------------------------

@Jason

We need to transfer knowledge of what hash is used, but having it in the name leaves you with
stuff like this:

http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.15

I'm +1 for Filipe's digest and digest_type fields.

> Add md5 hash to _attachments properties for documents
> -----------------------------------------------------
>
>                 Key: COUCHDB-687
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-687
>             Project: CouchDB
>          Issue Type: Improvement
>         Environment: CouchDB
>            Reporter: mikeal
>            Assignee: Filipe Manana
>         Attachments: couchdb-md5-in-attachment-COUCHDB-687-v2.patch, couchdb-md5-in-attachment-COUCHDB-687-v3.patch,
couchdb-md5-in-attachment-COUCHDB-687.patch, md5.patch
>
>
> The current attachment information looks like this:
> GET /dbname/docid
> "_attachments": {
>       "jquery-1.4.1.min.js": {
>           "content_type": "text/javascript"
>           "revpos": 138
>           "length": 70844
>           "stub": true
>       }
> }
> If a client wanted to sync local files as attachments with a document it would not currently
be able to do so without keeping a local store of the revpos. If this information included
an md5 hash of the attachment clients could compare it against a hash of the local file to
see if they match.
> -Mikeal

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