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<mailto: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<mailto: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<mailto:riak-users@lists.basho.com> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
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