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From freak182 <eman.noll...@gmail.com>
Subject Re: Question about LocalFileSystem and DataStore (File and DB)
Date Mon, 31 Aug 2009 14:42:26 GMT

Hello,

One thing i notice on FileDataStore even if i perform delete in my
application the files are still there in repository/datastore
directory...does datastore behaves like that, you can only add entry? never
delete?


Alexander Klimetschek wrote:
> 
> On Mon, Aug 31, 2009 at 3:34 PM, freak182<eman.nollase@gmail.com> wrote:
>>                <PersistenceManager
>> class="org.apache.jackrabbit.core.persistence.bundle.BundleFsPersistenceManager"
>> />
> 
> A database based bundle persistence manager is recommended, as the
> filesystem ones (eg. BundleFsPersistenceManager) are prone to
> inconsistencies as they are not transactional. For embedded scenarios
> without an existing (remote) database, the Derby bundle PM is useful.
> 
>> 1. Do still need a DataSore? what DataStore i use for production?
> 
> A datastore is optional. See [1] to [3].
> 
>> 2. what is the difference between a DataStore and FileSystem?
> 
> Also see the links.
> 
>> 3. what is the best combination of DataStore and PM for production use?
>> and
>> for clustering?
> 
> Bundle database PMs are good, and the FileDataStore is good for
> performance. If you must have everything in the database, a db
> datastore might be better.
> 
>> side question:
>> 4. How to configure DatabaseFileSystem?
> 
> Configuration of repository.xml elements are described on the
> configuration page [1] and in more detail in the javadocs of the
> class, eg. for the DbFileSystem it's [4].
> 
> [1] http://jackrabbit.apache.org/jackrabbit-configuration.html
> [2] http://wiki.apache.org/jackrabbit/PersistenceManagerFAQ
> [3] http://wiki.apache.org/jackrabbit/DataStore
> [4]
> http://jackrabbit.apache.org/api/1.5/org/apache/jackrabbit/core/fs/db/DbFileSystem.html
> 
> Regards,
> Alex
> 
> -- 
> Alexander Klimetschek
> alexander.klimetschek@day.com
> 
> 

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