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From "Laing, Michael" <michael.la...@nytimes.com>
Subject Re: number of replicas per data center?
Date Mon, 19 Jan 2015 12:06:36 GMT
Since our workload is spread globally, we spread our nodes across AWS
regions as well: 2 nodes per zone, 6 nodes per region (datacenter) (RF 3),
12 nodes total (except during upgrade migrations). We autodeploy into VPCs.
If a region goes "bad" we can route all traffic to another and bring up a
third.

Super inexpensive in that is very reliable, available and easy to manage.

ml

On Sun, Jan 18, 2015 at 11:50 PM, Kevin Burton <burton@spinn3r.com> wrote:

> Ah.. six replicas.  At least its super inexpensive that way (sarcasm!)
>
>
>
> On Sun, Jan 18, 2015 at 8:14 PM, Jonathan Haddad <jon@jonhaddad.com>
> wrote:
>
>> Sorry, I left out RF.  Yes, I prefer 3 replicas in each datacenter, and
>> that's pretty common.
>>
>>
>> On Sun Jan 18 2015 at 8:02:12 PM Kevin Burton <burton@spinn3r.com> wrote:
>>
>>> < 3 what? :-P replicas per datacenter or 3 data centers?
>>>
>>> So if you have 2 data centers you would have 6 total replicas with 3
>>> local replicas per datacenter?
>>>
>>> On Sun, Jan 18, 2015 at 7:53 PM, Jonathan Haddad <jon@jonhaddad.com>
>>> wrote:
>>>
>>>> Personally I wouldn't go < 3 unless you have a good reason.
>>>>
>>>>
>>>> On Sun Jan 18 2015 at 7:52:10 PM Kevin Burton <burton@spinn3r.com>
>>>> wrote:
>>>>
>>>>> How do people normally setup multiple data center replication in terms
>>>>> of number of *local* replicas?
>>>>>
>>>>> So say you have two data centers, do you have 2 local replicas, for a
>>>>> total of 4 replicas?  Or do you have 2 in one datacenter, and 1 in another?
>>>>>
>>>>> If you only have one in a local datacenter then when it fails you have
>>>>> to transfer all that data over the WAN.
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> Founder/CEO Spinn3r.com
>>>>> Location: *San Francisco, CA*
>>>>> blog: http://burtonator.wordpress.com
>>>>> … or check out my Google+ profile
>>>>> <https://plus.google.com/102718274791889610666/posts>
>>>>> <http://spinn3r.com>
>>>>>
>>>>>
>>>
>>>
>>> --
>>>
>>> Founder/CEO Spinn3r.com
>>> Location: *San Francisco, CA*
>>> blog: http://burtonator.wordpress.com
>>> … or check out my Google+ profile
>>> <https://plus.google.com/102718274791889610666/posts>
>>> <http://spinn3r.com>
>>>
>>>
>
>
> --
>
> Founder/CEO Spinn3r.com
> Location: *San Francisco, CA*
> blog: http://burtonator.wordpress.com
> … or check out my Google+ profile
> <https://plus.google.com/102718274791889610666/posts>
> <http://spinn3r.com>
>
>

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