Kaj Nielsen created COUCHDB-2262:
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Summary: CouchDB 1.6.0 missing Accept in Vary
Key: COUCHDB-2262
URL: https://issues.apache.org/jira/browse/COUCHDB-2262
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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