[Spread-users] Re: distributed financial application model - Spread group list access?

Yair Amir yairamir at cnds.jhu.edu
Thu Dec 9 09:13:06 EST 2004


This is an interesting issue.

I agree with Ryan that you should evaluate the performance with simply
sending updates to the groups regardless of their existence.
This should not pose too much overhead in local area settings.

If this does not work well for your settings, I think an efficient
solution for this kind of application can be provided by a modest
modification of Spread.


	:) Yair.

Ryan Caudy wrote:
> Kim has a point here... the wasted messages may not pose that large a
> problem for you, in a system such as this.  If I were you, I would at
> least evaluate the performance with simply sending updates to the
> groups regardless of their existence/membership.
> Cheers,
> Ryan
> On Wed, 08 Dec 2004 12:34:29 -0800, Kim Scheibel
> <kim_spread at scheibel.co.uk> wrote:
>>Firstly, thanks for involving the list in a meaty application question
>>such as this. I personally wish there were more application level
>>discussions going on on this list (in addition to the very useful and
>>important spread system level discussions of course).
>>Sending "several hundred [messages] per second" over spread should not
>>pose a problem at all in a local area setting. These messages could
>>conceivably serve as either simple cache invalidation messages or
>>actually allow the clients to update their caches from them, in which
>>case you'd have a distributed database on your hands with all the
>>complexity that entails.
>>Sending all the updates as Spread messages would also allow you to
>>perform real time analysis of the activity in any way you want now and
>>in the future by simply allowing one or more monitors to join the groups.
>>Good luck, looking forward to hearing which way you go.
>>Spread-users mailing list
>>Spread-users at lists.spread.org
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