Ok, cool. Thanks for the example! On Thu, May 5, 2011 at 3:51 PM, Aphyr <ap...@aphyr.com> wrote:
> I suppose if you had a really small number of keys in Riak it might be > faster, but you're almost certainly better off maintaining a second object > and making the lookup constant time. Here's an example: > > https://github.com/aphyr/risky/blob/master/lib/risky/indexes.rb > > --Kyle > > > On 05/05/2011 03:49 PM, Andrew Berman wrote: > >> Ah, that makes sense. So is it the case that using the link >> implementation will always be faster? Or are there cases where it makes >> more sense to use a key filter? >> >> Thanks! >> >> --Andrew >> >> On Thu, May 5, 2011 at 3:44 PM, Aphyr <ap...@aphyr.com >> <mailto:ap...@aphyr.com>> wrote: >> >> The key filter still has to walk the entire keyspace, which will >> make fetches an O(n) operation as opposed to O(1). >> >> --Kyle >> >> >> On 05/05/2011 03:35 PM, Andrew Berman wrote: >> >> I was curious if anyone has any thoughts on what is more >> performant, >> links or key filters in terms of secondary links. For example: >> >> I want to be able to look up a user by id and email: >> >> *Link implementation:* >> >> Two buckets: user and user_email, where id is the key of user >> and email >> is the key of user_email. User_email contains no data but >> simply has a >> link pointing back to the proper user. >> >> *Key Filter:* >> >> One bucket: user, where id_email is the key of the bucket. Lookups >> would use a key filter tokenizing the id and then looking up the >> id or >> email based on the proper token. >> >> Obviously both work, but I'm curious what the implications are >> from a >> performance standpoint. >> >> Thanks, >> >> Andrew >> >> >> >> _______________________________________________ >> riak-users mailing list >> riak-users@lists.basho.com <mailto: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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