[zeromq-dev] High water mark notification for publisher
bklooste at gmail.com
Sun Sep 23 05:04:00 CEST 2012
ADSL upload ???
On Sun, Sep 23, 2012 at 10:48 AM, Edwin Amsler <
edwinamsler at thinkboxsoftware.com> wrote:
> It's unlikely that an application can produce more data per second than
> the network hardware is able to handle?
> On 22/09/2012 12:57 AM, Pieter Hintjens wrote:
> > On Sat, Sep 22, 2012 at 12:57 AM, Edwin Amsler
> > <edwinamsler at thinkboxsoftware.com> wrote:
> >> It was mentioned that under the hood, the PUB-SUB system had individual
> >> outgoing queues, each with their own water mark counters. What happens
> >> to a message when all queues are full?
> > This is such an unlikely case... almost contrived. The real issue with
> > high-speed pub/sub is a small number of clients disconnecting or
> > getting swamped by other work, and their queues building up, and
> > causing memory exhaustion.
> > The best strategy to keep data flowing but also ensure reliability is
> > then some kind of out-of-band recovery for clients that need it.
> > There's some ideas in the Clone pattern in the Guide (request snapshot
> > at startup, then apply changes as they arrive to the snapshot).
> > -Pieter
> > _______________________________________________
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> > zeromq-dev at lists.zeromq.org
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