On Tue, 2012-05-08 at 15:42 -0400, Tom Horsley wrote: > On Tue, 08 May 2012 15:09:31 -0430 > Patrick O'Callaghan wrote: > > > I think it was Lamport > > who said that you can't tell 'down' from 'disconnected' (did the remote > > server crash, or is there a network disconnection? maybe the network is > > just congested, there's no way to tell). > > I can tell: If I've been getting responses in under 20 ms and now I > haven't gotten a response in 2 minutes, then the dadgum thing > is down :-). Or some router along the way is down, or congested. You simply don't know. Often you don't care, but sometimes you do because it makes a real difference (e.g. distributed database transactions) so you have to program defensively. However reliability is not cheap and is never perfect. poc -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
