[Spread-users] Another Newbie question

[John Lane Schultz]

Eduardo Ferro Aldama wrote:
> When I multicast a message how can I confirm that all the receivers have 
> actualy receive and process the message? is this possible?

In Spread the only way to truly know that all the receivers have processed a 
message is for each of them to eventually explicitly send a message ACK'ing that 
they have done so.

Spread also has SAFE delivery, which gives a related but weaker guarantee.  If a 
SAFE message is delivered before a transitional signal in a membership view, 
then all the members of that view will deliver that message unless they crash. 
If a SAFE message is delivered after a transitional signal in a membership view, 
then all the members of the transitional set of the first following membership 
view will deliver that message unless they crash.

Cheers!

-- 
John Schultz
Spread Concepts LLC
Phn: 443 838 2200
Fax: 301 560 8875