[infinispan-dev] Integration between HotRod and OGM

[Pedro Ruivo]

On 01/27/2014 09:52 AM, Sanne Grinovero wrote:
> On 27 January 2014 09:38, Pedro Ruivo <pedro at infinispan.org> wrote:
>>
>>
>> On 01/27/2014 09:20 AM, Sanne Grinovero wrote:
>>> On 23 January 2014 18:03, Dan Berindei <dan.berindei at gmail.com> wrote:
>>>>
>>>> On 22 Jan 2014 16:10, "Pedro Ruivo" <pedro at infinispan.org> wrote:
>>>>>
>>>>>
>>>>>
>>>>> On 01/22/2014 01:58 PM, Dan Berindei wrote:
>>>>>>
>>>>>>
>>>>>> It would also require us to keep a Set<K> for each group, with the keys
>>>>>> associated with that group. As such, I'm not sure it would be a lot
>>>>>> easier to implement (correctly) than FineGrainedAtomicMap.
>>>>>>
>>>>>>
>>>>>
>>>>> Dan, I didn't understand why do we need to keep a Set<K>. Can you
>>>>> elaborate?
>>>>
>>>>
>>>> We'd need some way to keep track of the keys that are part of the group,
>>>> iterating over the entire cache for every getGroup() call would be way too
>>>> slow.
>>>
>>> Right, and load all entries from any CacheStore too :-/
>>
>> IMO, I prefer to iterate over the data container and cache loader when
>> it is needed than keep the Set<K> for each group. I think the memory
>> will thank you
>
> Of course. I'm just highlighting how importand Dan's comment is,
> because we obviously don' t want to load everything from CacheStore.
> So, tracking which entries are part of the group is essential:
> failing this, I'm still skeptical about why the Grouping API is a
> better replacement than FGAM.

I have one reason: FGAM does not work inside transactions...

>
> Sanne
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