Use another bucket, keyed by email, with the users generated ID as the value:
Bucket/key: buckets/users-by-email/bob.bar...@gmail.com Value: Riak generated ID There are, I am sure, race conditions and eventual consistency issues to keep in mind, but it's good to remember that you can use key/value operations in this manner. -- Luke Bakken Engineer lbak...@basho.com On Fri, Sep 4, 2015 at 3:04 AM, Hao <jusf...@163.com> wrote: > Take registration for example, within 1 second, how could I find out the > same user already registered in the database? Suppose the email address is > the ID but is not the key. KEY is generated guid. > > (I have been suggested to use the email address as the key. But it's a big > change. I just want to make sure that there is really no other way) > > Thanks, > > -- > Hao _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
