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<[email protected]> 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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Aristedes Maniatis
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