[infinispan-dev] Cross-Site Replication, State Transfer and RAC

[Pedro Ruivo]

On 11/08/2013 07:59 AM, Galder Zamarreño wrote:
>
> On Nov 1, 2013, at 11:32 AM, Pedro Ruivo <pedro at infinispan.org> wrote:
>
>> Hi all,
>>
>> I've updated the wiki pages related to Cross-Site Replication with the
>> topics discussed lately:
>>
>> https://github.com/infinispan/infinispan/wiki/Design-For-Cross-Site-Replication
>
> ^ How does conflict resolution fit with the discussions we had around split brains scenarios? Seems to me this should be solved in the split brain scenario first and then port over the solution to here, rather than have two separate conflict resolution strategies? Also, this might be considered part of the eventual consistency discussions.

Although the problem looks similar, the solutions are totally different 
IMO. in X-Site replication, we have site s1..sn and if they both try to 
update key k with values v1..vn (where v1 is set by s1, and so on...) we 
need to deterministically choose one value to keep the data consistent.

Eventual consistent can also be used to tackle this problem.

In the end, I'm expecting the clients in each site to access disjoin 
data set most of the time.

>
>> Also, I've moved the Reliable Asynchronous Clustering to the new wiki
>> and added some notes in the end:
>>
>> https://github.com/infinispan/infinispan/wiki/RAC:-Reliable-Asynchronous-Clustering
>>
>> Any feedback is more than welcome.
>
> Thanks a lot for writing this up!
>
>>
>> Cheers,
>> Pedro Ruivo
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>
>
> --
> Galder Zamarreño
> galder at redhat.com
> twitter.com/galderz
>
> Project Lead, Escalante
> http://escalante.io
>
> Engineer, Infinispan
> http://infinispan.org
>
>
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