Re: Cassandra Setup Question

[Carlos Rolo]

Use networktopologystrategy as replication strategy and make sure you have
dc1: 3 and dc2: 3.

This way you have 3 replicas in each DC.



On 23 Aug 2017 12:53, "Jonathan Baynes" 
wrote:

> Hi Community,
>
>
>
> Quick question regarding Replication Factor.
>
>
>
> In my Production Environment I currently have 6 nodes this will grow to 10
> shortly), over 2 datacentres, so currently 3 in each, we want to have
> Active/Passive setup so the Client will only speak to DC 1 via load
> balancing policy, but we want the data to replicate across both DCs , so
> that in the event of a DC failure the second DC acts as our DR DC and has
>  all the data as well.
>
>
>
> The Consistency will be Quorum, but replication Factor does that need to
> be 3 or 6.
>
>
>
> Thanks
>
> J
>
>
>
> *Jonathan Baynes*
>
> DBA
> Tradeweb Europe Limited
>
> Moor Place  •  1 Fore Street Avenue  •  London EC2Y 9DT
> P +44 (0)20 77760988 <+44%2020%207776%200988>  •  F +44 (0)20 7776 3201
> <+44%2020%207776%203201>  •  M +44 (0) xx
>
> jonathan.bay...@tradeweb.com
>
>
>
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--

Cassandra Setup Question

[Jonathan Baynes]

Hi Community,

Quick question regarding Replication Factor.

In my Production Environment I currently have 6 nodes this will grow to 10 
shortly), over 2 datacentres, so currently 3 in each, we want to have 
Active/Passive setup so the Client will only speak to DC 1 via load balancing 
policy, but we want the data to replicate across both DCs , so that in the 
event of a DC failure the second DC acts as our DR DC and has  all the data as 
well.

The Consistency will be Quorum, but replication Factor does that need to be 3 
or 6.

Thanks
J

Jonathan Baynes
DBA
Tradeweb Europe Limited
Moor Place  *  1 Fore Street Avenue  *  London EC2Y 9DT
P +44 (0)20 77760988  *  F +44 (0)20 7776 3201  *  M +44 (0) xx
jonathan.bay...@tradeweb.com

[cid:image001.jpg@01CD26AD.4165F110]   follow us:  
[cid:image002.jpg@01CD26AD.4165F110] 

[cid:image003.jpg@01CD26AD.4165F110] 
-
A leading marketplace for electronic 
fixed income, derivatives and ETF trading




This e-mail may contain confidential and/or privileged information. If you are 
not the intended recipient (or have received this e-mail in error) please 
notify the sender immediately and destroy it. Any unauthorized copying, 
disclosure or distribution of the material in this e-mail is strictly 
forbidden. Tradeweb reserves the right to monitor all e-mail communications 
through its networks. If you do not wish to receive marketing emails about our 
products / services, please let us know by contacting us, either by email at 
contac...@tradeweb.com or by writing to us at the registered office of Tradeweb 
in the UK, which is: Tradeweb Europe Limited (company number 3912826), 1 Fore 
Street Avenue London EC2Y 9DT. To see our privacy policy, visit our website @ 
www.tradeweb.com.