Re: [JIRA] Created: (CAY-925) Support Entity/Table scope caching

From: Malcolm Edgar (malcolm.edga..mail.com)
Date: Wed Nov 28 2007 - 17:05:03 EST

  • Next message: Andrus Adamchik: "Re: [JIRA] Created: (CAY-925) Support Entity/Table scope caching"

    Hi Andrus,

    Thanks for the advice. To do this I presume I need to have Level 2 (local
    VM) caching enabled, and then set caching policy as appropriate for the
    query:

    // For most of the queries
    QueryMetadata.LOCAL_CACHE

    // For cached lookup data
    QueryMetadata.SHARED_CACHE

    regards Malcolm Edgar

    On Nov 28, 2007 8:47 PM, Andrus Adamchik <andru..bjectstyle.org> wrote:

    > Malcolm,
    >
    > Cayenne already supports this via query caching. Check
    > SelectQuery.setCachePolicy(..). The policy can be either of
    > QueryMetadata.LOCAL_CACHE, QueryMetadata.LOCAL_CACHE_REFRESH,
    > QueryMetadata.SHARED_CACHE, QueryMetadata.SHARED_CACHE_REFRESH (should
    > probably define them as enums in 3.0).
    >
    > Andrus
    >
    >
    > On Nov 27, 2007, at 11:58 PM, Malcolm Edgar (JIRA) wrote:
    >
    > > Support Entity/Table scope caching
    > > ----------------------------------
    > >
    > > Key: CAY-925
    > > URL: https://issues.apache.org/cayenne/browse/CAY-925
    > > Project: Cayenne
    > > Issue Type: New Feature
    > > Components: Cayenne Core Library, CayenneModeler GUI
    > > Affects Versions: 3.0
    > > Reporter: Malcolm Edgar
    > > Assignee: Andrus Adamchik
    > >
    > >
    > > On most of our projects we do not use caching, because of the size
    > > of the databases, and or issues of multiple applications writing to
    > > the database. However one feature we would really like is to be
    > > able to specify that individual tables/entities are cached in memory
    > > by Cayenne.
    > >
    > > This is typically for UI lookup values which change very
    > > infrequently, or deployment properties which also change
    > > infrequently. By caching this information in memory we can
    > > significantly reduce the number of requests made to the database and
    > > improve application performance.
    > >
    > > --
    > > This message is automatically generated by JIRA.
    > > -
    > > You can reply to this email to add a comment to the issue online.
    > >
    > >
    >
    >



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