On Sun, Jan 18, 2015 at 8:50 PM, Kevin Burton bur...@spinn3r.com wrote:
Ah.. six replicas. At least its super inexpensive that way (sarcasm!)
People with larger numbers of data centers do tend to reduce their
replication factor per DC. It's all about how much consistency you want to
risk,
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
Ah.. six replicas. At least its super inexpensive that way (sarcasm!)
Well it's up to you to decide what your data locality and fault tolerance
requirements are.
If you want to run two DC's, costs are going to increase since each DC has
a full set of replicas within itself. But you get the
Ah.. six replicas. At least its super inexpensive that way (sarcasm!)
On Sun, Jan 18, 2015 at 8:14 PM, Jonathan Haddad j...@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
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 j...@jonhaddad.com wrote:
Personally I wouldn't go 3 unless you have a good reason.
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 bur...@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
Personally I wouldn't go 3 unless you have a good reason.
On Sun Jan 18 2015 at 7:52:10 PM Kevin Burton bur...@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
I like to have 3 replicas across 3 racks in each datacenter as a rue of thumb.
You can vary that, but it depends upon the use case, and the SLA's for latency.
This can get a little complicated if you're using the cloud and automated
deployment strategies as I like to use the same abstractions
