On 29 Jan 2014, at 09:57, Edgar Veiga <edgarmve...@gmail.com> wrote:

> tl;dr
> 
> If I guarantee that the same key is only written with a 5 second interval, is 
> last_write_wins=true profitable?

It depends. Does the value you write depend in anyway on the value you read, or 
is it always that you are just getting a totally new value that replaces what 
is in Riak (regardless what is in Riak)?

> 
> 
> On 27 January 2014 23:25, Edgar Veiga <edgarmve...@gmail.com> wrote:
> Hi there everyone!
> 
> I would like to know, if my current application is a good use case to set 
> last_write_wins to true.
> 
> Basically I have a cluster of node.js workers reading and writing to riak. 
> Each node.js worker is responsible for a set of keys, so I can guarantee some 
> kind of non distributed cache... 
> The real deal here is that the writing operation is not run evertime an 
> object is changed but each 5 seconds in a "batch insertion/update" style. 
> This brings the guarantee that the same object cannot be write to riak at the 
> same time, not event at the same seconds, there's always a 5 second window 
> between each insertion/update.
> 
> That said, is it profitable to me if I set last_write_wins to true? I've been 
> facing some massive writting delays under high loads and it would be nice if 
> I have some kind of way to tune riak.
> 
> Thanks a lot and keep up the good work!
> 
> 
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