Re: [infinispan-dev] JBoss Libra
On 4 February 2012 14:57, Manik Surtani <manik(a)jboss.org> wrote:
This is very similar to storeAsBinary. If this is set to true, then
keys and values are serialized and stored as a MarshalledValue which contains the
resulting byte[]. So rather than restrict to just byte[] types, we could restrict to:
* byte[] or any other primitive, primitive array or String
* OR, if storeAsBinary is set to true.
+1, the family of known sizes can be extended. We could even do a
recursive calculation and ask the registered Externalizer for the
specific type; it's unlikely we can have this information returned by
all externalizers but many could be able to handle a fairly accurate
estimate.
Precision is more important when allocating buffers for network & co,
so if we enrich the Externalizer API to provide such information it
would be handy to know as well if it's going to be an estimate or a
precise size of serialized form, considering as well that serialized
size isn't necessarily going to match the runtime memory cost.
The tricky part will be to get this to work with Vladimir's LIRS container which
works on number of entries. :) Vladimir?
Cheers
Manik
On 3 Feb 2012, at 18:14, Sanne Grinovero wrote:
> New idea: what about implementing a memory-size based eviction policy
> which only works on values of type byte[] ?
>
> The limitation might be strong, but actually applies quite well to
> some use cases:
> - Hot Rod
> - Lucene
>
> I think this could serve well more use cases, and specifically for
> Lucene it would rock, as besides from some small metadata, the bulk of
> stuff is big arrays of bytes.
>
> -- Sanne
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--
Manik Surtani
manik(a)jboss.org
twitter.com/maniksurtani
Lead, Infinispan
http://www.infinispan.org
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