[jbosscache-dev] LRU Eviction policy question

[Manik Surtani]

Darshan,

Please don't post such questions on this mail list.  This is for  
discussion of issues around developing JBoss Cache, not for end-user  
questions.  Please use the user forums[1] instead.

Cheers and happy new year,
Manik



[1] http://jboss.org/index.html?module=bb&op=viewforum&f=157
--
Manik Surtani

Lead, JBoss Cache
JBoss, a division of Red Hat

Email: manik at jboss.org
Telephone: +44 7786 702 706
MSN: manik at surtani.org
Yahoo/AIM/Skype: maniksurtani



On 1 Jan 2007, at 09:36, Darshan Bildikar wrote:

> Hello All,
>
> I'm new to JBoss cache and sorry if this question has already been  
> asked
> before. I tried to find answers on the list with no success.
>
> My problem is like this:-
>
> I want to configure my cache such that
>
> 1) It contains no more than 10K objects at any given time
> 2) An object remains in the cache (either in memory / PERSISTENT  
> store) for
> MAX 200 seconds. It must be automatically REMOVED from the cache  
> after 200
> seconds lapse.
>
> I am using an LRU eviction policy with a File cache loader. I have the
> following question.
>
> My region configuration looks like this
>
> <region name="/test">
> 	<attribute name="maxNodes">10000</attribute>
> 	<attribute name="timeToLiveSeconds">100</attribute>
> 	<attribute name="maxAgeSeconds">200</attribute>
> </region>
>
> I assume that this means "Evict my object to persistent store if  
> maxNodes >
> 10000 OR maxAgeSeconds > 200"
>
> What I however want is: After 10000 entries any new entry it is  
> serialized
> to the persistent store. However, after 200 seconds (irrespective  
> of whether
> it's in the persistent store or in memory) it needs to be REMOVED  
> from the
> cache. Is there a configuration that will help me do this?
>
> I'm sorry if this question has been asked before. Appreciate any  
> pointers.
>
> BR
> Darshan
>
> Human beings, who are almost unique in having the ability to learn  
> from the
> experience of others, are also remarkable for their apparent  
> disinclination
> to do so
>
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