[infinispan-dev] Infinispan embedded off-heap cache

cotton-ben ben.cotton at ALUMNI.RUTGERS.EDU
Fri Mar 7 12:11:09 EST 2014


Thanks Peter.  The plan is for Dmitry and I to at first extend 
VanillaSharedHashMap and groom it into an ISPN7 join via their 
DataContainer API bridge.

That ExtendedVSHM will be morphed into a fully inter-operable JCACHE 
operand will

- initially be brokered by the ISPN 7 config  (JSR107 <----> 
VSHMExtendedDataContainer <----> VSHM)
- eventually, possibly, be rendered with ExtendedVSHM directly 
implementing javax.cache.Cache (in addititon to DataContainer)

On 03/07/2014 11:43 AM, Peter Lawrey wrote:
>
> In the medium term I would see SHM supporting a DataContainer. If a 
> Cache were supported I would do it as a layered class so those who 
> don't need the functionality of a Cache don't incur an overhead.
>
> On 8 Mar 2014 03:35, "Ben Cotton" <ben.cotton at alumni.rutgers.edu 
> <mailto:ben.cotton at alumni.rutgers.edu>> wrote:
>
>     Thank you for this insight Mircea ...
>
>     Ultimately ... I want the OpenHFT SHM off-heap operand to behave
>     *exactly* like a JCACHE ... Amenable to being soundly/completely
>     operated upon by any/all parts of ISPN7's Impl of the JSR-107 API .
>
>     Musing openly:  Won't that (eventually) necessitate me physically
>     implementing javax.cache.Cache ?
>     /
>     //> //Another way to do it is to have CacheImpl implement the
>     DataContainer only, and then configure Infinispan's JCache
>     implementation to use that custom DataContainer.
>
>     /I see what you mean.  OK, for sure, this sounds much simpler than
>     what I have put on my initial TODO list.
>
>     Question:  Will doing it this way  in any manner suggest that my
>     JSR-107 specific operators are being transitively "brokered" by
>     the ISPN config onto my OpenHFT SHM operand?  If possible, I want
>     everything to be direct -- no API bridge.
>
>     Thanks again, Mircea.
>
>     -Ben and Dmitry
>
>     Sent from my iPhone
>     On 03/07/2014 09:45 AM, Mircea Markus-2 [via Infinispan Developer
>     List] wrote:
>>     Hi Ben,
>>
>>     In the diagram provided, the CacheImpl (your class) extends both
>>     from javax.cache.Cache and org.infinispan.container.DataContainer.
>>     The Cache and DataContainer interfaces are quite different and I
>>     anticipate an single class implementing both to be hard to follow
>>     and potentially not very efficient.
>>     Another way to do it is to have CacheImpl implement the
>>     DataContainer only, and then configure Infinispan's JCache
>>     implementation to use that custom DataContainer.
>>
>>     On Mar 3, 2014, at 3:46 PM, cotton-ben <[hidden email]
>>     <http://user/SendEmail.jtp?type=node&node=4028967&i=0>> wrote:
>>
>>     > Quick Update:
>>     >
>>     > It is my understandng that Peter Lawrey will make available  an
>>     OpenHFT HC
>>     > Alpha Release in Maven Central next weekend. At that time,
>>     Dmitry Gordeev
>>     > and I will take the OpenHFT dependency tag and proceed to build
>>     a branch of
>>     > Red Hat's ISPN 7 that will treat
>>     net.openhft.collections.SharedHashMap as a
>>     > Red Hat Infinispan 7 default impl of a fully JSR-107
>>     interoperable off-heap
>>     > javax.cache.Cache ...
>>     >
>>     > A diagram of this build effort can be found here:
>>     >
>>     https://raw.github.com/Cotton-Ben/OpenHFT/master/doc/AdaptingOpenHFT-SHM-as-JCACHE-Impl.jpg
>>     > ...
>>     >
>>     > The Red Hat view of his effort will be tracked here:
>>     > https://issues.jboss.org/browse/ISPN-871 ...
>>     >
>>     > The code that defines the Impl will be here
>>     > https://github.com/Cotton-Ben/infinispan ...
>>     >
>>     >
>>     >
>>     >
>>     >
>>     > --
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>>     Cheers,
>>     -- 
>>     Mircea Markus
>>     Infinispan lead (www.infinispan.org <http://www.infinispan.org>)
>>
>>
>>
>>
>>
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