[infinispan-dev] Global components per CacheManager

[Galder Zamarreño]

On Oct 25, 2010, at 1:39 PM, Galder Zamarreño wrote:

> 
> On Oct 25, 2010, at 12:46 PM, Mircea Markus wrote:
> 
>> 
>> On 25 Oct 2010, at 09:56, Galder Zamarreño wrote:
>> 
>>> 
>>> On Oct 24, 2010, at 10:41 PM, Vladimir Blagojevic wrote:
>>> 
>>>> User on a forum complained seeing eviction thread per created cache [1]. Although global configuration settings are shared amongst all caches created in CacheManager each created cache gets a fresh copy of these global elements?! Each created cache therefore indeed gets a new eviction executor service with one running thread. Does that mean that by default we also create one async transport executor per cache with 25 threads spinning? 
>>>> 
>>>> If so, we should tell users that running more than two dozen caches per CacheManager is going to impact the system significantly.
>>>> 
>>>> [1] http://community.jboss.org/thread/157913 
>>> 
>>> This is not down to the user. It's the 2LC case where there's a cache per each entity/collection type. So, if you have a lot of entities/collections in your case, you'll get this effect.
>>> 
>>> Expiration is set on per cache level, but maybe we need a more clever way for cache manager to manager expiration when two or more caches shared the same expiration settings. Or more simply, manage expiration at the cache manager level.
>> Expiration runs from eviction thread. It is possible to share the same eviction thread between multiple caches by writing a custom ScheduledExecutorFactory and specify it in the global evictionScheduledExecutor.  
> 
> I'll look into this further cos maybe the Infinispan 2LC code needs such factory, taking in account the type of use case explained earlier.

Actually, forget what I said, since we agreed on having such a default scheduler factory - https://jira.jboss.org/browse/ISPN-730

> 
>>> 
>>>> --
>>>> Vladimir Blagojevic
>>>> JBoss Clustering Team
>>>> JBoss, by Red Hat
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
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>>> 
>>> --
>>> Galder Zamarreño
>>> Sr. Software Engineer
>>> Infinispan, JBoss Cache
>>> 
>>> 
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> 
> --
> Galder Zamarreño
> Sr. Software Engineer
> Infinispan, JBoss Cache
> 
> 
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--
Galder Zamarreño
Sr. Software Engineer
Infinispan, JBoss Cache