You can make new clusters or you can isolate with datacenters that don’t have a
keyspace replicated.
On Jul 16, 2018, 10:41 AM -0400, Durity, Sean R <sean_r_dur...@homedepot.com>,
wrote:
> In most cases, we separate clusters by application. This does help with
> isolating problems. A bad query in one application won’t affect other
> applications. Also, you can then scale each cluster as required by the data
> demands. You can also upgrade separately, which may be a huge help. You only
> need one team’s testing (and driver change or whatever) before you can
> upgrade. With a multi-tenant ring, you will need much more coordination for
> any changes.
>
> There is a practical limit of the number of memtables per cluster, too. This
> is somewhere in the low hundreds (200-300), based on the amount of RAM you
> have per node.
>
>
> Sean Durity
>
> From: onmstester onmstester <onmstes...@zoho.com>
> Sent: Monday, July 16, 2018 9:17 AM
> To: "user" <user@cassandra.apache.org>
> Subject: [EXTERNAL] New cluster vs Increasing nodes to already existed cluster
>
> Currently i have a cluster with 10 nodes dedicated to one keyspace (Hardware
> sizing been done according to input rate and ttl just for current application
> requirements).
> I need a launch a new application with new keyspace with another set of
> servers (8 nodes), there is no relation between the current and new
> application. I have two option:
> 1. add new nodes to already existed cluster (10 nodes + 8 nodes) and share
> the power and storage between the keyspace
> 2. create a new cluster for the new application (isolate clusters)
> Which option do you recommend and why ? (i care about of cost of maintenance,
> performance (write and read), isolation of problems)
> Sent using Zoho Mail
>
>
>
>
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