Re: [infinispan-dev] [ISPN-6] (Infinispan cache provider for Hibernate) Remaining TODOs, notes and questions

On 4 Aug 2009, at 14:02, Galder Zamarreno wrote: >> >> s/region.ispn4/infinispan > > Ok. > > One thing here though. Chris's original solution works in such way > that for each entity/collection, a new cache is retrieved from the > cache manager using the region name, so for this example 3 caches > would be created: > > Cache1 for [org.hibernate.test.cache.infinispan.functional.VersionedItem] > Cache2 for [org.hibernate.test.cache.infinispan.functional.Item] > Cache2 for [org.hibernate.test.cache.infinispan.functional.Item.items] > > Can we confirm this is the intented way? In > https://jira.jboss.org/jira/browse/ISPN-6 the following is mentioned: > > "Use a separate named cache per entity. This cache would hold entity > instances as well as collections pertaining to that entity." > > So, if that is followed and we bear in mind the above example, there > should only be 2 cache instances created rather than the current 3. > > What is clear is that there's no need for > hibernate.cache.infinispan.cfg.entity or > hibernate.cache.region.ispn4.cfg.collection. Simply stick the default > cache configuration for entity/collections in the default section of > configuration. > > I don't we need hibernate.cache.infinispan.cfg.query and > hibernate.cache.infinispan.cfg.timestamps either since we can simply > name the caches with the corresponding region names > (org.hibernate.cache.UpdateTimestampsCache]and > org.hibernate.cache.StandardQueryCache) and that's it. I suppose that would depend on the need for different eviction characteristics for different entity types. So from that perspective (the ability to use) a different cache per entity is useful. E.g., NoEvictionCache for [CountryList] NoEvictionCache for [SomeOtherDropDown] AggressivelyEvictedLRUCache for [Users] AggressivelyEvictedLRUCache for [Orders] LargeCapacityFIFOCache for [ProductsCatalog] etc. may well prove useful.

Brian/Steve - care to chime in? Cheers -- Manik Surtani manik(a)jboss.org Lead, Infinispan Lead, JBoss Cache http://www.infinispan.org http://www.jbosscache.org