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https://issues.apache.org/jira/browse/JAMES-2583?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Duprat closed JAMES-2583.
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> [ObjectStore] New Composing ObjectStore ontop of Swift and Cassandra
> --------------------------------------------------------------------
>
> Key: JAMES-2583
> URL: https://issues.apache.org/jira/browse/JAMES-2583
> Project: James Server
> Issue Type: Improvement
> Reporter: Trần Tiến Đức
> Priority: Major
> Fix For: 3.3.0
>
>
> Why we need it?
> In our production, we're using cassandra blobstore, regards to the purpose of
> switching to swift blobstore, we need a kind of new BlobStore which writes
> new blobs to swift, read new blobs from swift, read old blobs from cassandra.
> Proposal name: JoiningObjectStore
>
> Definition of Done
> 1. new JoiningObjectStore implements BlobStore
> 2. JoiningObjectStore should compose primary BlobStore and secondary
> BlobStore.
> when reading from JoiningObjectStore, read from the primary BlobStore, if not
> exist, fallback to the secondary blobstore.
> similar to write.
> 3. test it
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