René Cordier created JAMES-4156:
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Summary: Deleted Message Vault: use a single bucket
Key: JAMES-4156
URL: https://issues.apache.org/jira/browse/JAMES-4156
Project: James Server
Issue Type: Improvement
Affects Versions: 3.9.0
Reporter: René Cordier
Today, the deleted message vault uses a bucket per month to store deleted
messages. And when the bucket is older than the retention period, we delete it,
via a GC task.
The goal here would be to use a single bucket instead, like
`james-deleted-messages-vault`. S3 object stores are flat but we could simulate
folders by using key prefixes to manage time with the following pattern:
`2025/12/[blob_id]`.
We can keep the Cassandra tables for the distributed system, just the bucket
name would be the single one and the blobId would be prefixed with year and
month
We could have a BlobStoreDeletedMessageVaultV2 that would take care of the
vault with a single bucket. We can have a BlobIdGenerator that generates BlobId
having the year and month in the prefix.
BlobStoreDeletedMessageVaultV2 needs to be retro compatible with the current
vault:
- write: only write to the new single bucket
- read: we need to be able to fall back to the old buckets
- delete: we need to be able to delete old blobs
Keep BlobStoreVaultGarbageCollectionTask where we would also add cleaning old
object from the new single bucket too, among the old ones.
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