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Date: Fri, 29 Jan 2010 00:26:35 -0800 (PST)
From: Nishant Neeraj <nneeraj123@yahoo.com>
Subject: Re: Individual Object Caching
To: user@cayenne.apache.org
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OK. So, even if a new query results in individual object cache to be flushe=
d, we are still avoiding DB hits becasue we have query result cache in plac=
e.

Does query result cache gets individually flushed, or the only way is group=
 flush [1]? Actually, I want to cache User objects (or query results) forev=
er. User object is retrieved when user logs in using an expression like "us=
er_name=3D$name and password=3D$pwd". I want to make sure that whenever a u=
ser updates his information the object and query result for that particular=
 user gets flushed, not all the users that were retrieved using "user_name=
=3D$name and password=3D$pwd" expression. Please suggest.

[1]http://cayenne.apache.org/doc/query-result-caching.html

Regards
Nishant
--- On Thu, 28/1/10, Andrus Adamchik <andrus@objectstyle.org> wrote:

From: Andrus Adamchik <andrus@objectstyle.org>
Subject: Re: Individual Object Caching
To: user@cayenne.apache.org
Date: Thursday, 28 January, 2010, 3:36 PM

Yes, a query refreshes cached objects (unless the query itself is served fr=
om cache).

Andrus

On Jan 28, 2010, at 11:59 AM, Nishant Neeraj wrote:

> Hi,
>=20
> I am a bit confused on the way Cayenne handles object-cache. It sounds to=
 me that object-cache gets invalidated [1], whenever a call like this takes=
 place
>=20
>=0A loadMenu(){...
> SelectQuery query =3D new SelectQuery(PaintingType.class, ...);
> return (List<PaintingType>)context.performQuery(query);
> }
> Now, there are multiple users accessing the same page that calls loadMenu=
(), as per the document [1], for each user Object-Cache for this would be f=
lushed and restores.
>=20
> [1] http://cayenne.apache.org/doc/individual-object-caching.html
>=20
> RegardsNishant
>=20
>=20
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