I have some from a while back, if I can find my graphs I'll put them up somewhere.
Cheers Russell On 17 Oct 2013, at 16:35, Weston Jossey <weston.jos...@gmail.com> wrote: > Great everyone, thank you. > > @Russell: I specifically work with either Go > (https://github.com/tpjg/goriakpbc) or Ruby (basho client). I haven't tested > the ruby client, but I'd assume it will perform the write without the read > (based on my reading of the code). The Go library, on the other hand, > currently always performs a read prior to the write. It's an easy patch that > I've already applied locally for benchmarking, I just didn't want to submit > the PR till I was sure this was the correct behavior. > > Somewhat off topic, but I dont' want to open up another thread if it's > unnecessary. This questions arose because I've been doing extensive > benchmarking around distributed counters. Are there pre-existing benchmarks > out there that I can measure myself against? I haven't stumbled across many > at this point, probably because of how new it is. > > Cheers, > Wes > > > On Thu, Oct 17, 2013 at 10:21 AM, Russell Brown <russell.br...@mac.com> wrote: > Hi Wes, > > The client application does not need to perform a read before a write, the > riak server must read from disk before updating the counter. Or at least it > must with our current implementation. > > What PRs did you have in mind? I'm curious. > > Oh, it looks like Sam beat me to it…to elaborate on his "not idempotent" > line, that means when riak tells you "error" for some counter increment, it > may only be a partial failure, and re-running the operation may lead to over > counting. > > Cheers > > Russell > > On 17 Oct 2013, at 16:03, Weston Jossey <weston.jos...@gmail.com> wrote: > > > In the context of using distributed counters (introduced in 1.4), is it > > strictly necessary to perform a read prior to issue a write for a given > > key? A la, if I want to blindly increment a value by 1, regardless of what > > its current value is, is it sufficient to issue the write without > > previously having read the object? > > > > I ask because looking at some of the implementations for counters in the > > open source community, it's common to perform a read before a write, which > > impacts performance ceilings on clusters with high volume reads / writes. > > I want to verify before issuing some PRs that this is in fact safe behavior. > > > > Thank you! > > -Wes Jossey > > _______________________________________________ > > 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
