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From "Jan Lehnardt (JIRA)" <>
Subject [jira] Commented: (COUCHDB-61) Separate storage of attachments from the main database file
Date Sun, 28 Dec 2008 19:03:44 GMT


Jan Lehnardt commented on COUCHDB-61:

Damien via dev@

"What you are proposing is grouping the document data together for better OS caching performance,
but CouchDB already does that. Documents bodies are written to contiguous regions, one after
another, the attachments are stored in separate locations in the file.


— this is what I meant with my previous comment :)

> Separate storage of attachments from the main database file
> -----------------------------------------------------------
>                 Key: COUCHDB-61
>                 URL:
>             Project: CouchDB
>          Issue Type: New Feature
>          Components: Database Core
>         Environment: All
>            Reporter: Jan Lehnardt
>            Priority: Minor
> At the moment all document- and attachment-data go into the same database file. It would
be nice if the attachments could be saved in a different file. This would enable the use of
slower and cheaper hardware for attachment storage and faster hardware for the document and
index data storage.

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