To remove some of the black magic can I suggest a tool like YourKit? It is very helpful for figuring out where all your memory goes.
Also, consider a common approach is to have one 'read-only' [1] shared context which persists for the life of the application and is used to show data (products, etc) to users. Then a small context created per session which contains just the objects which that user is modifying (invoice, invoice lines, payment, contact, etc) within the session. Certainly that isn't the only approach, but it is pretty common.
Ari Maniatis
[1] There is no such thing as a 'read-only' context in Cayenne. Read-only just describes the way you use it.
On 18/09/09 4:53 AM, Michael Gentry wrote:
> That's probably bigger than you want. Try 500 just to see how it
> works. Adjusting that number is black magic. :-)
>
>
> On Thu, Sep 17, 2009 at 2:40 PM, Joe Baldwin<jfbaldwi..arthlink.net> wrote:
>> Michael
>>
>>> What is the size of your object cache? Look under the DataDomain. If
>>> it is a large number, try lowering it.
>>
>>
>> Query Cache Factory: org.apache.cayenne.cache.MapQueryCacheFactory
>> Size of Object Cache: 10000
>> Use Shared Cache: checked
>>
>> I do not know if 10,000 is small, medium, or large.
>>
>> What do you recommend?
>>
>> Joe
>>
>>
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