Lukas, Yes, even for dev you'd be best advised to develop and test your application with the same or similar number of nodes and n, r, and w settings as you would in production. It's good practice to develop applications in a dev/test environment that mirrors the production environment as much as is reasonable/feasible. You can run a single node cluster, but note that this isn't a configuration you'll see in a production.
Ian Plosker Developer Advocate Basho Technologies On Aug 27, 2011, at 5:33 AM, Jonathan Langevin wrote: > Even for development-purposes only? Otherwise it seems data would be written > n times to the same machine, which is needless in a dev environment with low > storage specs... > > > Jonathan Langevin > Systems Administrator > Loom Inc. > Wilmington, NC: (910) 241-0433 - jlange...@loomlearning.com - > www.loomlearning.com - Skype: intel352 > > > > On Fri, Aug 26, 2011 at 5:01 PM, Ian Plosker <i...@basho.com> wrote: > Lukas, > > Also, we don't advise that you run single node clusters. Riak is designed to > be used in clusters of at least 3 nodes. You can run a multi-node cluster on > a single development machine by downloading the Riak source, and running > "make devrel". Take a look at the Riak Fast Track > (http://wiki.basho.com/The-Riak-Fast-Track.html) for more details. > > Ian Plosker > Developer Advocate > Basho Technologies > > On Aug 26, 2011, at 3:17 PM, Lukas Schulze wrote: > >> I'm doing some simple tests with Riak and tried to build something like an >> index. >> Therefore I created new buckets for some attributes like "name", "street" >> and "city". >> One entry in the index-bucket "name" is for example "Mueller" and the value >> contains all user ids, formatted as an JSON string: "{id:[1,5,8,13,2,7]}" >> The java objects are saved as JSON strings in a separate bucket "users", the >> keys in this bucket are the user-ids, the values are the JSON strings. >> >> If I add 200 users via Java and the RiakPBC client every loop I fetch the >> index, add the new user id and store it again in Riak. >> But java is too fast, so I receive an old version of the bucket. >> >> Because I've only one node I set the n-value to 1, r = 1, w = 1 and dw = 1. >> But I have to wait nearly 2 seconds to be mostly sure to get the correct >> response. (the computer isn't an high-end machine ;-) ) >> >> Is it possible to be sure that the data will be saved permanently and I can >> continue adding users? >> Are there any caching methods I can configure? >> Can I set the default n-value to 1 so that every newly created bucket will >> have this value? >> Does Riak have any kind of indexes or is it possible to implement it a >> better way? >> >> In my first version I saved all users in one bucket and iterated over all of >> them to find the correct one. But for every single request from the Java >> Service to Riak it took nearly 200ms. For a huge amount of entries (10,000) >> this isn't practible. Therefore I tried to implement my own indexes. >> >> The main focus of my question is getting rid of the inconsistent reads. >> >> Thank you. >> >> Best Regards >> Lukas >> _______________________________________________ >> riak-users mailing list >> riak-users@lists.basho.com >> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > > > _______________________________________________ > riak-users mailing list > riak-users@lists.basho.com > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > >
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