[ntp:questions] Syncing and peering for a multi-continent deployment

Blair Zajac blair at orcaware.com
Wed Apr 10 02:03:19 UTC 2013


On 04/08/2013 10:01 AM, David Woolley wrote:
> John Hasler wrote:
>> David Woolley writes:
>>> Intercontinentally he can probably tolerate several milliseconds or
>>> even low tens of milliseconds without any risk that there is any doubt
>>> that two events are not causally related.
>>
>> He might be using software that won't tolerate such offsets, though.
>
> Unless he is doing common view observations on something
> extra-terrestrial, I'm not sure how the software would not tolerate than
> sort of offset.

Thanks everyone for your response.

I'm setting up a multi-datacenter Cassandra instance.  Cassandra cares a 
little, but the data I'm inserting I need to have ordered.

I was thinking that having ~1 millsecond offsets would be nice, 
definitely less than 5 ms.

Blair



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