Pre loading

My requirement is that I need data to survive a grid restart. I've implemented a write behind persistence layer, implementing CacheStore and IterableCacheLoader using an Oracle table to store objects. All appears to be working well. Rows are being inserted in the database in response to coherenced put()'s. But if I bounce the entire grid, I want coherence to become aware of the objects which are persisted in the store, by calling keys().
Do I have to do this myself, using an external "cache warmer" process, or is there a way to induce Coherence to populate it's cache from the backing store on grid start up?
I tried setting pre-load to true in the local-scheme in config xml file, but to no avail.
I read a tantalizing description of custom quorum policy which claim to be able to do this. But there was no example and not enough detail for me.
Leonard
Edited by: 792513 on Sep 2, 2010 1:02 PM

Hi Leonard,
I think the following document should help you out.
http://wiki.tangosol.com/display/COH35UG/Pre-Loading+the+Cache
The cache store should also be aware that this is a preload so that it does not write the data back into the database.
If you check out the section Sample Controllable CacheStore in the following document. It should help. Essentially there are two choices.
Either use a control cache or use something like CacheStoreAware interface
http://coherence.oracle.com/display/COH35UG/Sample+CacheStores
Thanks,
-Dave

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