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From "Miro Walker" <miro.wal...@gmail.com>
Subject Re: SimpleDBPersistenceManager file cache?
Date Fri, 20 Apr 2007 15:05:15 GMT
Hi Phillip,

Why would putting blobs in the database have a bearing on which
machines can access them? Because of the way that Jackrabbit's caching
works, you can't ordinarily access the same backing store (database or
other) from multiple jackrabbit instances on different machines (as
write operations on one machine will not be reflected in the cache on
the other machine(s)). If you want to do this, I believe you might
need to:

* use jcr-rmi or webdav or some other custom remoting protocol to
allow multiple client machines to access a single jackrabbit server
instance; or
* possibly look into clustering multiple jackrabbit servers using the
new capabilities of JR 1.3.

The latter is pretty new technology, so comes with the obvious warnings :-).

Note also that blobs and workspace data are not the only pieces of
transactional data that can be stored on the filesystem. You may also
want to look at the DBFileSystem stuff to allow you to store
workspace.xml files in there too, otherwise newly created workspaces
will only exist on the local filesystem.



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