hello, i am currently evaluating riak as data-storage for out upcoming project. the wiki provides a lot of informations and is really good - most of my questions are answered, but i did not find much information about how riak handles concurrent client updates on the same key (i know riak uses vclocks, but i am not sure what this means in practise).
for example: ------------------- having a key "X" with a given value of 100. clientA and clientB both load "X" in parallel, increment it by 10 and store it back into riak. will "X" have a value of 110, 120 or do we get something like a "concurrent modification"-error ? (in my case i want riak to store the value as 120 or give me same "concurrent modification"-error) does it matter if clientA and clientB are connected to the same/different physical riak-node ? ------------------- does riak support some kind of lock-handling like "lock table(bucket)" / "select for update" as in sql or do i have to implement this in my application-layer ? any help would be really appreciated. regards jan zimmek _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
