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Posted to oak-issues@jackrabbit.apache.org by "Julian Reschke (Jira)" <ji...@apache.org> on 2021/10/25 13:15:00 UTC

[jira] [Commented] (OAK-7744) Persistent cache for the Segment Node Store

    [ https://issues.apache.org/jira/browse/OAK-7744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17433753#comment-17433753 ] 

Julian Reschke commented on OAK-7744:
-------------------------------------

Ouch: this has leaked yet another Guava class (CacheStats) into an API.

> Persistent cache for the Segment Node Store
> -------------------------------------------
>
>                 Key: OAK-7744
>                 URL: https://issues.apache.org/jira/browse/OAK-7744
>             Project: Jackrabbit Oak
>          Issue Type: Story
>          Components: segment-tar
>            Reporter: Tomek Rękawek
>            Assignee: Andrei Dulceanu
>            Priority: Major
>             Fix For: 1.34.0
>
>         Attachments: OAK-7744-02.patch, OAK-7744.patch
>
>
> With the introduction of custom, remote persistence mechanisms for the SegmentMK (namely the Azure Segment Store), it makes sense to create another level of cache, apart from the on-heap segment cache which is currently used.
> Let's implement the persistent cache, using the existing {{TarFiles}} class and storing the processed segments on disk. It may be created as a pass-through {{SegmentNodeStorePersistence}} implementation, so it can be composed with other existing persistence implementations, eg. [split persistence|OAK-7735].



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