On 15 Aug 2009, at 00:36, Łukasz Moreń wrote:

> Infinispan offers several persistance stores to persist content of
> cache, i.e. based on file system, database, S3 amazon service.
> Is there some recommendation which one should be used as a default
> for Hibernate Search directory provider based on Infinispan cache?

Depends, really. If you expect more indexes than available memory a
file system approach is best. You have the FileCacheStore, or
BdbjeCacheStore as well.  I would not really recommend the
JdbcCacheStore for this. The S3CacheStore is a good option if you are
deployed on an Amazon cloud (e.g., on EC2) otherwise latency will
become a problem.

> What about cache loaders configuration strategy: one cache store per
> node, one common store for all nodes, only single node allowed to
> write to persistance store.

Using a common store only makes sense if you have a common storage
location, e.g. with S3CacheStore or JdbcCacheStore. With file system
approaches, this only makes sense if it is mounted on a shared volume
such as NFS or a SAN, but I wouldn't recommend using NFS with any of
the cache stores.

So anyway, as far as defaults are concerned, I think the best is to
use the FileCacheStore (no external dependencies that way), and one
cache store per node (so there is no constraint on a shared volume).  
But it is a good idea to note down the thoughts above in a README or a
wiki page somewhere.

Cheers
--
Manik Surtani
manik@(protected)
Lead, Infinispan
Lead, JBoss Cache
http://www.infinispan.org
http://www.jbosscache.org





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