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Posted to server-dev@james.apache.org by "Tellier Benoit (JIRA)" <se...@james.apache.org> on 2019/06/24 10:08:00 UTC
[jira] [Commented] (JAMES-2805) Top level implementation of the
DeletedMessageVault
[ https://issues.apache.org/jira/browse/JAMES-2805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16871037#comment-16871037 ]
Tellier Benoit commented on JAMES-2805:
---------------------------------------
- https://issues.apache.org/jira/browse/JAMES-2806 intend to allow the BlobStore caller to specify a bucketName
> Top level implementation of the DeletedMessageVault
> ---------------------------------------------------
>
> Key: JAMES-2805
> URL: https://issues.apache.org/jira/browse/JAMES-2805
> Project: James Server
> Issue Type: Improvement
> Reporter: Tellier Benoit
> Priority: Major
>
> While working on the deletedMessageVault, we targeted in MAILBOX-381 a first implementation on top of MailRepositories
> That decision was unfortunate as then one can browse the content of the deletedMessageVault vault through webAdmin.
> Thus we decided to implement DeletedMessageVault as a separate component.
> That component has the following considerations:
> - Should have a low storage cost
> - Cold storage and delays upon reads are acceptable as one does not expect a restore/export to be fast
> - Find an efficient way to implement retention (deleting too old emails) without a full scan
> We decided to provide an implementation above the blobStore and a metaData store (cassandra)
> Retention will be implemented with object storage buckets (one month = 1 bucket). We could then simply delete a bucket when all the mails it contains are older than the retention period.
> Querying the deleteMessageVault will first be done with a full scan. Later enhancement can be done by providing a per-bucket (immutable) Lucene index - once the bucket is no longer the latest one.
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