[Spread-users] New to spread, some questions

J C Lawrence claw at kanga.nu
Sat Feb 12 18:55:56 EST 2005

On Sat, 12 Feb 2005 12:10:16 -0500 
Ryan Caudy <rcaudy at gmail.com> wrote:

> First, I want to make sure that we're talking about the same things. I
> think when you said "mailbox" you meant "group" in the terminology
> Spread uses.  A "mailbox" usually refers to the handle/socket/fd
> belonging to a single connected process.

Ahh, sorry about that.  Among a few other message bus and tuple space
implementations all using variant definitions for a common base of
terms...I get lost sometimes.

> To answer your question, if A sends to a group that only has members
> connected to daemon-A and daemon-B, daemon-C *will* receive the
> message, but won't deliver it to any processes.  

Oh.  Ouch.

> The reason for this is Spread's ordered-delivery protocol.
> Better-engineered schemes exist, but aren't implemented in the
> publicly available version of Spread.

Ahh, right then.  Thanks.  

J C Lawrence
---------(*)                Satan, oscillate my metallic sonatas.
claw at kanga.nu               He lived as a devil, eh?
http://www.kanga.nu/~claw/  Evil is a name of a foeman, as I live.

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