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how can i set the time reset cache data in "Query Cache

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eckal

Post subject: how can i set the time reset cache data in "Query Cache

Posted: Thu Jul 15, 2004 4:46 am

Newbie

Joined: Sun Jul 11, 2004 11:43 pm
Posts: 9

I have do the process
===========================================
List blogs = sess.createQuery("from Blog blog where blog.blogger = :blogger order by blog.datetime desc")
.setEntity("blogger", blogger)
.setMaxResults(15)
.setCacheable(true)
.setCacheRegion("frontpages")
.list();
=====================================
but ,what is the life cycle is over?
we can config it?
I need to reset it per day,can i do it ?

thanks.

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shl

Post subject:

Posted: Thu Jul 15, 2004 6:32 am

Expert

Joined: Fri Feb 06, 2004 7:49 am
Posts: 255
Location: Moscow, Russia

in ehcache.xml:

Code:

<ehcache>
..
   <cache name="net.sf.hibernate.cache.UpdateTimestampsCache"
      maxElementsInMemory="10000"
      eternal="false"
      timeToIdleSeconds="300"
      timeToLiveSeconds="600"
      overflowToDisk="false"
      />

   <cache name="net.sf.hibernate.cache.QueryCache"
      maxElementsInMemory="10000"
      eternal="false"
      timeToIdleSeconds="300"
      timeToLiveSeconds="600"
      overflowToDisk="false"
      />
</ehcache>

--
Leonid

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shl

Post subject:

Posted: Thu Jul 15, 2004 6:46 am

Expert

Joined: Fri Feb 06, 2004 7:49 am
Posts: 255
Location: Moscow, Russia

and look at the new WIKI page about QueryCache: http://www.hibernate.org/213.html

--
Leonid

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eckal

Post subject: thanks "shl ":

Posted: Fri Jul 16, 2004 1:45 am

Newbie

Joined: Sun Jul 11, 2004 11:43 pm
Posts: 9

by the way,how to use the name with "net.sf.hibernate.cache.QueryCache" in java?
thanks a lots.

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shl

Post subject:

Posted: Fri Jul 16, 2004 2:58 am

Expert

Joined: Fri Feb 06, 2004 7:49 am
Posts: 255
Location: Moscow, Russia

"net.sf.hibernate.cache.QueryCache" is a default cache region, it should be used when you have not set required cache region with

Code:

Query.setCacheRegion("frontpages")

If you want to tune "frontpages" cache region, configure it in your ecache.xml:

Code:

...
<cache name="frontpages"
      maxElementsInMemory="10000"
      eternal="false"
      timeToIdleSeconds="300"
      timeToLiveSeconds="600"
      overflowToDisk="false"
      />

Read another thread about QueryCache configuration http://forum.hibernate.org/viewtopic.php?t=931007. In that thread michael, a hibernate team member, explained me QueryCache configuration.

--
Leonid

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