On Apr 26, 2006, at 7:46 PM, Cypher ! wrote:
> how do I turn the QueryLogger on and off?
http://objectstyle.org/confluence/display/CAYDOC/Configuring+Logging
> The problem I am having is the application is hitting the database
> for virtually every request and not caching any data at all. [...]
> How do I enable shared caching and other types of caching
You need to understand that there is no single solution to persistent
data caching that will address all situations, short of keeping the
entire database in memory, but if you are using Oracle, this is
probably not what you want. Still Cayenne provides a number of
facilities to do smart caching. You'll need to understand them and
apply as appropriate:
1. Query caching. I assume you've seen this page:
http://objectstyle.org/confluence/display/CAYDOC/Caching+Query+Results
A SHARED_CACHE policy is especially helpful when reading shared
static data, such as a list of countries or us states, etc.
2. Prefetching - optimizing your queries:
http://objectstyle.org/confluence/display/CAYDOC/Prefetching
3. DataObjectUtils - object retrieval by PK will use shared cache if
possible.
4. Relationship caching. This mostly applies to to-one relationships
- cross-DataContext to-one relationships are automatically resolved
from cache. You don't have to do anything.
Andrus
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