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From Jeremy Jongsma <>
Subject Re: Measuring WAN replication latency
Date Wed, 30 Jul 2014 17:43:59 GMT
Yes, the results should definitely not be relied on as a future performance
indicator for key app functionality. but knowing roughly what your current
replication latency is (and whether it's outside of the normal average) can
inform client failover policies, debug data consistency issues, warn of
datacenter link congestion, etc.

On Wed, Jul 30, 2014 at 12:02 PM, Robert Coli <> wrote:

> On Wed, Jul 30, 2014 at 6:59 AM, Rahul Neelakantan <> wrote:
>> Any ideas you can provide on how to do this will be appreciated, we would
>> like to build a latency monitoring tool/dashboard that shows how long it
>> takes for data to get sent across various DCs.
> The brute force method described downthread by Jeremy Jongsma gives you
> something like the monitoring you're looking for, but I continue to believe
> it's probably a bad idea to try to design a system in this way.
> =Rob

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