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https://issues.apache.org/jira/browse/OAK-5786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15960749#comment-15960749
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Alex Parvulescu commented on OAK-5786:
--------------------------------------
wip on my branch
https://github.com/stillalex/jackrabbit-oak/tree/eager-memory-store
I've rebased today and following latest changes, the branch is broken. I'll try
to get it working again soon.
> Memory based FileStore bootstrap
> --------------------------------
>
> Key: OAK-5786
> URL: https://issues.apache.org/jira/browse/OAK-5786
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: segment-tar
> Reporter: Alex Parvulescu
> Assignee: Alex Parvulescu
> Fix For: 1.8, 1.7.1
>
>
> A memory-based FileStore boot would reduce IO to zero (or as close as
> possible) and provide more insight into the code bottlenecks (locks,
> concurrency control, etc).
> A very basic idea (with minimal changes to current code) is to boot a
> FileStore that would
> * disable mmaping
> * have an unbounded segment cache (and/or other caches), with no size checks
> * eagerly load all application state in memory on startup
> * optionally flush everything to disk on shutdown only so the state is
> persistent
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