[Spread-users] Re: [Software-bus] What are *you* looking for in a software bus?
ned at bike-nomad.com
Tue Aug 6 14:10:39 EDT 2002
On Tuesday 06 August 2002 10:31 am, Jason W. May wrote:
> In the environment you described for Microship, I wonder if this
> assumption still
> applies. If you have to deal with changes in latency between
> nodes, node availability,
> and transmission speed, what impact does that have on the
> requirements for a message bus?
I'm not sure that it impacts the bus itself at all. For instance,
using something like Spread, we'd eventually hear that a group had
lost connectivity between one of its members and the local daemon. I
*think* that Spread can handle having the network partitioned and
then re-attached. Assuming that really important messages are held
until the network connectivity is restored, the bus should work
However, I can see some value-added features that could be provided by
such a system:
* message priority classes or bandwidth preferences. Don't bother
sending unless the priority is high enough or the bandwidth is high
enough to all the group members.
* notification on significant changes to topology or speed for the
membership of given group.
* queries for effective bandwidth to members of a group
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