Re: [infinispan-dev] Infinispan and Google app engine

Cool effort. I know that local mode would be useful, as at least the code doesn't need to change in or out of gae/j. P.S. jaxb preview is out. gae 1.2.8 will support it, although I don't know the constraints. Cheers, -Adrian On Mon, Nov 30, 2009 at 10:05 AM, Vladimir Blagojevic <vblagoje(a)redhat.com&gt; wrote: > Hi all, > > Manik asked me to investigate what it would take to deploy Infinispan > inside google app engine (GAE). As you might have heard GAE execution > environment is somewhat constricted (can not create threads, write to > files, open sockets, etc). Right from a get go it was clear that we can > not run Infinispan in any mode other than local. However, even if > Infinispan is run in local mode GAE users could benefit from > Infinispan's JSR-107 cache interface that is backed up with cache store > implemented using google datastore api. There probably are use case > scenarios where GAE users interact with both google provided JSR-107 > memcache service [1] and datastore [2] separately where in fact > Infinispan's JSR-107 interface that is automatically synced with > datastore would make much more sense. > > Manik and I went back and forth and decided to put this sub project on a > back burner at this moment. Even though we could accommodate GAE's > thread restriction it turns out that GAE sandbox restrictions involve > several apis that we use (JAXB, JMX, JNDI among others) and retrofitting > Infinispan into this tight sandbox would be a headache. There is a > strong comunity push to unrestrict these API and it seems pressures from > community would eventually be successful. > > Also, I am still awaiting for some feedback from Mircea to see if we can > even implement google datastore cache loader to be transactional. Even > though GAE datastore supports transactions they are only available in > the same entity group [3]. As far as I understand GAE datastore they > implement horizontal partitioning which basically involves putting > different rows into different tables. Think each Person row entry would > have to be in different table unless they are in some owns (say > parent-child) relationship. > > Feedback appreciated, > Vladimir > > [1] http://code.google.com/appengine/docs/java/memcache/usingjcache.html > [2] http://code.google.com/appengine/docs/java/datastore/ > [3] http://www.youtube.com/watch?v=2jW2iSKDipY (between 6:45 and 11:40) > _______________________________________________ > infinispan-dev mailing list > infinispan-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/infinispan-dev > _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev