Number of DCs in Cassandra

[Shaurya Gupta]

Hi

Does someone have any suggestions on the maximum number of Data Centers
which NetworkTopology strategy can have for a keyspace. Not only
technically but considering performance as well.
In each Data Center RF is 3.

Thanks!
-- 
Shaurya Gupta

Re: Number of DCs in Cassandra

[Erick Ramirez]

You can really have as many as you need. The most unusual clusters I've
worked on had about 12 DCs mostly because they had different workloads that
needed to be isolated into their own DCs so one workload didn't affect
another. FWIW by "workloads" I mean OLTP, analytics, reporting, etc.

How many did you have in mind?

Re: Number of DCs in Cassandra

[manish khandelwal]

I don't think there is any restriction on the number of data centers. So
technically you can add as many data centers you want.
 Performance depends on how you use your cluster. For example, one of your
data centers could be read only, or is there traffic on all the data
centers.


On Wed, Jul 14, 2021 at 12:03 PM Shaurya Gupta 
wrote:

> Hi
>
> Does someone have any suggestions on the maximum number of Data Centers
> which NetworkTopology strategy can have for a keyspace. Not only
> technically but considering performance as well.
> In each Data Center RF is 3.
>
> Thanks!
> --
> Shaurya Gupta
>
>
>