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https://issues.apache.org/jira/browse/COUCHDB-2263?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Shorin closed COUCHDB-2263.
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Resolution: Duplicate
> CouchDB 1.6.0 missing Accept in Vary
> ------------------------------------
>
> Key: COUCHDB-2263
> URL: https://issues.apache.org/jira/browse/COUCHDB-2263
> Project: CouchDB
> Issue Type: Bug
> Security Level: public(Regular issues)
> Components: HTTP Interface
> Reporter: Kaj Nielsen
>
> CouchDB does server-driven content negotiation.
> Meaning that it returns text/html, text/plain or application/json, depending
> on which context a particular URL was called in (after performing an educated
> guess using the Accept request header).
> A bit yucky, but necessary at times..
> The bug is that CouchDB does not include "Accept" in it's "Vary" response
> header.
> This means that if you stick a modern HTTP cache in front of CouchDB, then
> the cache won't know that it has to fetch different content on behalf of
> clients that send different Accept headers.
> This results in clients getting a cached copy with a content type of whatever
> the first client that hit the cache happened to prefer, rather than what the
> client needs.
> Solution: include "Vary: Accept, ..." in the response headers generated by
> CouchDB.
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