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Posted to notifications@couchdb.apache.org by "Nolan Lawson (JIRA)" <ji...@apache.org> on 2016/03/31 15:58:25 UTC

[jira] [Created] (COUCHDB-2978) ETag should not be sent for _local docs

Nolan Lawson created COUCHDB-2978:
-------------------------------------

             Summary: ETag should not be sent for _local docs
                 Key: COUCHDB-2978
                 URL: https://issues.apache.org/jira/browse/COUCHDB-2978
             Project: CouchDB
          Issue Type: Bug
          Components: HTTP Interface
            Reporter: Nolan Lawson


CouchDB re-uses the same ETags for _local documents even when the content of the _local document has changed, meaning that clients who cache based on the ETag may end up with permanently stale content. To reproduce the bug, it's simply:

1. Create a _local doc
2. Fetch the doc, ETag is "0-1"
3. Delete the database (or the _local doc)
4. Recreate the database (or the _local doc), insert a *changed* _local doc
5. Fetch the doc, ETag is still "0-1" and therefore the client may end up with a stale version.

Here are related issues in PouchDB and WebKit for further details:
- [PouchDB bug|https://github.com/pouchdb/pouchdb/issues/5010]
- [WebKit bug|https://bugs.webkit.org/show_bug.cgi?id=156048]



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