[messaging] Group messaging consistency under resource constraints

Ximin Luo infinity0 at pwned.gg
Mon Oct 6 16:41:15 PDT 2014

On 07/10/14 00:37, Andy Isaacson wrote:
> On Mon, Oct 06, 2014 at 11:07:13PM +0100, Ximin Luo wrote:
>> If one doesn't care about consistency of history, it's fine to just
>> display messages immediately as they arrive. If one does care about
>> it, then you can't. Or at least, I believe not - and nobody has
>> proposed a system that does so.
> That's a false dichotomy.  Systems frequently display messages as they
> arrive, sometimes with an indication of missing history and sometimes
> without; and systems frequently insert messages in the history when they
> arrive, generally with some indication that this has happened.

Sure, prove me wrong. :) I have explained what I understand of the problem in the first post, maybe it will be useful for that effort.

> And then there's the IRC model where messages just get displayed as they
> arrive, and the user can deal with any lossage.
> Systems that do variations on this include
> Hipchat
> Slack
> As it turns out, very few people anymore are using thermal paper
> consoles http://www.columbia.edu/cu/computinghistory/la36.html and
> UIs can go back and correct history when we learn more detail.

Do any of these systems try to achieve group consistency of history, under resource constraints?



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