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From "Florian Westreicher (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-2063) Return current document with 409 response
Date Fri, 14 Feb 2014 12:14:19 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-2063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13901372#comment-13901372
] 

Florian Westreicher commented on COUCHDB-2063:
----------------------------------------------

include_doc or include_conflict

> Return current document with 409 response
> -----------------------------------------
>
>                 Key: COUCHDB-2063
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-2063
>             Project: CouchDB
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>            Reporter: Isaac Z. Schlueter
>
> You do a PUT, and it doesn't have the current rev.
> So then you do a GET, to get the current rev.
> Then you re-try your PUT.
> Please make the second request unnecessary.  Just send the current doc in the 409 response
body, unless the user opts-out with a `?send_current=false` or something.
> There are almost no examples of cases where you'd do a PUT and *not* want to immediately
GET the doc on a 409.  The only case I could think of would be an in-place modifying follower
where you don't care about a 409, because it means that another change is coming in the stream
anyway.  Are there any others?  Even in those cases, you could just set the opt-out flag to
not get the current data in the response.
> The only harm in doing this is that outdated apps will still do the (now-unnecessary)
GET.  That's not so bad.  They'll keep working.
> Systems with a single write-master and multiple read-slaves, however, will be able to
leverage this to great effect, rather than relying on cache-busting query params and other
kludges.



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