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From "Thomas Mueller (Jira)" <j...@apache.org>
Subject [jira] [Created] (OAK-9116) Datastore: read-only cache that uses a key-value store
Date Tue, 16 Jun 2020 15:58:00 GMT
Thomas Mueller created OAK-9116:
-----------------------------------

             Summary: Datastore: read-only cache that uses a key-value store
                 Key: OAK-9116
                 URL: https://issues.apache.org/jira/browse/OAK-9116
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: blob
            Reporter: Thomas Mueller


For data stores that are large and contain a lot of small entries, the overhead of the current
file cache is quite large: at least one file per entry is needed. For most file systems, that
means 4 KB per entry. If entries are much smaller (e.g. 30 bytes), the overhead is large.

We could instead use a read-only key-value store for such entries.



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