Thanks, Christopher! I played with n_val, r and w on a bucket-type level for a while. No luck even I set r equal to n_val (r+w>n_val).
Qiang On Thu, Mar 3, 2016 at 9:25 PM, Christopher Mancini <cmanc...@basho.com> wrote: > If you don't need strong consistency for all Riak requests, just certain > ones, then explore the use of R and N vals that can be passed along with > the request or on a bucket-type level. > > On Thu, Mar 3, 2016 at 9:23 PM Mark Schmidt <mschm...@orcawave.net> wrote: > >> Hi Qiang, >> >> >> >> Other more skilled folks can correct me if I am wrong, but I believe you >> can enforce strong consistency on your nodes: >> http://docs.basho.com/riak/latest/theory/concepts/strong-consistency/ >> >> >> >> If I recall, you will take a performance hit as all nodes must receive >> the data. >> >> >> >> Thanks, >> >> >> >> - Mark Schmidt >> >> >> >> *From:* riak-users [mailto:riak-users-boun...@lists.basho.com] *On >> Behalf Of *Qiang Cao >> *Sent:* Thursday, March 03, 2016 6:13 PM >> *To:* Dave King <djk...@gmail.com> >> *Cc:* riak-users <riak-users@lists.basho.com> >> *Subject:* Re: Continuous HTTP POSTs to Riak >> >> >> >> Thanks, Dave! I'm aware of Riak's eventual consistency. I wonder how I >> can get Riak work in the way as I need. I'm in a situation where I expect >> the immediate GET reads the value I've just posted. And the GET request >> isn't sent out until the POST is done. >> >> >> >> Thanks, >> >> -Qiang >> >> >> >> On Thu, Mar 3, 2016 at 6:53 PM, Dave King <djk...@gmail.com> wrote: >> >> You need to google 'Eventual consistency'. >> >> >> >> - Peace >> >> Dave >> >> >> >> >> >> On Thu, Mar 3, 2016 at 4:23 PM, Qiang Cao <caoqiang...@gmail.com> wrote: >> >> Hi All, >> >> >> >> I use Riak as a KV store and send http requests to its REST API to update >> entries. Instead of using curl, I use Apache HttpClient to send requests. >> >> >> >> One thing bothering me is that sometimes I find the entry isn't properly >> updated after an HTTP POST/PUT. For example, if I do an HTTP GET on the >> same key immediately after an HTTP POST, the chance is good that I get a >> stale value. This happens when I continuously POST to a multi-node Riak, >> and some of the posts target the same key. >> >> >> >> Also, I find I don't have this issue if I use a single-node Riak. So I >> think something wasn't correct with my multi-node Riak cluster (I set >> "allow_mult" to false). Any thoughts? >> >> >> >> Thanks in advance! >> >> >> >> Qiang >> >> >> >> _______________________________________________ >> 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 >> > -- > Sincerely, > > Christopher Mancini > ----------------------------- > > employee = { > purpose: solve problems with code, > phone: 7164625591, > email: cmanc...@basho.com, > github: http://www.github.com/christophermancini > } >
_______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
