[infinispan-dev] Integration between HotRod and OGM

[Sanne Grinovero]

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.

Sanne