Re: Multi DCs vs Single DC performance

2020-07-28 Thread onmstester onmstester
Thanks for your immediate and clear response, Jeff


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 On Wed, 29 Jul 2020 08:00:33 +0430 Jeff Jirsa  wrote 


PROBABLY not, unless you've got a very very clever idea of using local 
consistency levels or somehow taking advantage of write forwarding in a way I 
havent personally figured out yet (maybe if you had a very high replica count 
per DC, then using forwarding and EACH_QUORUM may get fun, but you'd be better 
off dropping the replica count than coming up with stuff like this).


On Tue, Jul 28, 2020 at 8:27 PM onmstester onmstester 
 wrote:

Hi,



Logically, i do not need to use multiple DCs(cluster is not geographically 
separated), but i wonder if splitting the cluster to two half (two separate dc) 
would decrease overhead of node ack/communication and result in better (write) 
performance?

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Re: Multi DCs vs Single DC performance

2020-07-28 Thread Jeff Jirsa
PROBABLY not, unless you've got a very very clever idea of using local
consistency levels or somehow taking advantage of write forwarding in a way
I havent personally figured out yet (maybe if you had a very high replica
count per DC, then using forwarding and EACH_QUORUM may get fun, but you'd
be better off dropping the replica count than coming up with stuff like
this).

On Tue, Jul 28, 2020 at 8:27 PM onmstester onmstester
 wrote:

> Hi,
>
> Logically, i do not need to use multiple DCs(cluster is not geographically
> separated), but i wonder if splitting the cluster to two half (two separate
> dc) would decrease overhead of node ack/communication and result in better
> (write) performance?
>
> Sent using Zoho Mail 
>
>
>
>
>
>