[jbosscache-dev] migrating data stored in 1.x format to VAM format

[Manik Surtani]

Either way though, if this is going in to beta2, update the jira and  
make sure you don't check anything into HEAD - I haven't tagged B1  
yet.  :-)

Will provide more useful comments shortly ...
--
Manik Surtani

Lead, JBoss Cache
JBoss, a division of Red Hat

Email: manik at jboss.org
Telephone: +44 7786 702 706
MSN: manik at surtani.org
Yahoo/AIM/Skype: maniksurtani



On 25 Jan 2007, at 12:06, Galder Zamarreno wrote:

> Hi all,
>
> I'm deferring http://jira.jboss.com/jira/browse/JBCACHE-879 to  
> BETA2 because I still need to write this: http://jira.jboss.com/ 
> jira/browse/JBCACHE-882
>
> The reason I'm deferring it is because I can't see a  
> straightforward way of doing such thing right now. Ideally, you  
> should be able run a 1.x version (cache1) and a 2.x version  
> (cache2) of JBC in the same VM so that you can do a loop of  
> cache1.get() and call cache2.put(). However, I have doubts that  
> that this approach will be free of class loading issues. What do  
> you think?
>
> I was wondering whether Region based could help here, but I can't  
> see right now how this could be done.
>
> Something I had in mind is having the capability of to start a  
> cache with either 1.x marshalling or VAM marshalling, but oriented  
> at being used only at the cache loader level. It wouldn't make much  
> sense for replication because there's no hard data there.
>
> I thought that you could start two instances of cache 2.x, first  
> with 1.x. marshalling and the other one with VAM both pointing to  
> different JDBCCacheLoader stores. You could then get from the first  
> using normal mmarshalling and put in the second one which has VAM  
> marshalling active, what do you think?
>
> If you like the approach, I should be have it ready by BETA2.
>
> This last approach looks simpler to me, what do you think?
>
> Galder Zamarreño
> Sr. Software Maintenance Engineer
> JBoss, a division of Red Hat
>
>
>
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