I'm personally more aligned with Sanne's concerns. In particular, you should be 
able to release really quickly and the release cycle separation seems like a 
sign that you cannot achieve that today. 
We had a very bad experience with Hibernate around a matrix of compatibility 
between core, annotations and entity manager. Not sure such a model works in 
practice. Despite best efforts we did break things between micro versions. 
An intermediary mode is the one Lucene has with a core and a contrib 
distribution. Not yet stable or peripheral modules and all in contrib. but in 
practice people tend to wait for the contrib to be released for a given core 
and projects end up using one or the other of the contributions. 

Emmanuel

On 10 mai 2013, at 11:54, Mircea Markus <[email protected]> wrote:

> 
> On 10 May 2013, at 10:06, Manik Surtani wrote:
> 
>> There seems to be a bit of confusion on this thread.  The things I hope to 
>> achieve here are:
>> 
>> 1.  De-coupled release cycle.
>> Most of our releases include new versions of XYZCacheStore, even though 
>> there are no changes to it.  This creates noise, IMO.  Cache Stores should 
>> only be released when there are changes made to it.  Now this wasn't so much 
>> of a problem when we just had a small handful of cache stores, but as this 
>> increases, this becomes even more noisy/confusing to end-users.
>> 
>> 2.  Smaller download.
>> Not everyone uses all cache stores; not including everything in a zip ball 
>> will reduce download size.  But as pointed out before, this can be achieved 
>> via other techniques.
>> 
>> 3.  Scalability.
>> Moving cache stores to separate repos will allow us to add more cache 
>> stores, accept more contribs for experimental cache stores, build out a 
>> richer ecosystem.  Right now, we restrict the number of cache store impls to 
>> prevent bloat of the core distribution.
> 
> well summarised.
> 
>> 
>> This does *not* impact the developer at all, IMO.  CI (and test) runs on 
>> core will still involve testing all *non-experimental* cache stores.  I 
>> think this should happen every time and not just daily.
> I don't think we need to do it on every build. But this is more of an 
> configuration option and we can do it if needed.
>> 
>> In terms of a compatibility matrix (which cache stores work with which 
>> versions of core), we'd need to devise a scheme.  For example, match on 
>> major.minor, like CacheStore 5.3.x will work with any version of core 5.3.x.
> +1
> Cheers,
> -- 
> Mircea Markus
> Infinispan lead (www.infinispan.org)
> 
> 
> 
> 
> 
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