Re: NearCache

[Ilya Kasnacheev <il...@gmail.com>]

Hello!

You can have onHeap cache
https://apacheignite.readme.io/docs/memory-configuration#section-on-heap-caching

setting copyOnRead to false will let you keep unmarshalled values in it. Be
sure to avoid modifying them in your code since that's not tracked.

Regards,
-- 
Ilya Kasnacheev


ср, 16 янв. 2019 г. в 18:03, Grégory Jevardat de Fombelle <
gregory.jevardat@unige.ch>:

> Hello
>
> Is there any option to have  a nearCache in Ignite that store
> unMarschalled values instead of serialized ones. I ask this for performance
> reasons.
> I noticed that for big cached objects, default Java unserialization is
> quite expensive, like ~ 2 secs for a complex > 100MB object.  So in the end
> caching this kind of objects in a near cache is not really interesting
> given the penalty of the serialisation.
> On the opposite caching a reference of this object in a custom applicative
> cache like ThreadLocal map of even just a Hashmap, the retrieval is almost
> instantaneous (order of 10-100 nano secs)
>
> Note that I did not tested binary serialisation or storing Json serialized
> objects or other custom serialisation libraries like protobuf or kryo. Also
> I'am not sure if it is possible to use custom libraries for serialisation
> of huge and complex graph of objects.
> Are there any options or architectural recommandations and some benchmarks
> on this topic ?