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From Miles Fidelman <>
Subject Re: experience with very large numbers of nodes?
Date Tue, 20 Apr 2010 18:30:04 GMT
Eric Casteleijn wrote:
> On 04/20/2010 01:17 PM, Miles Fidelman wrote:
>> Hi Folks,
>> Does anybody have any experience with very large Couch deployments - on
>> the order of 100s to 1000s of nodes?
> For Ubuntu One, we have a very large number of nodes: one on every 
> machine of every user of the service, and then a central node on our 
> server (or set of nodes, but each user will only see one) that it 
> replicates from and to, and we believe this can be made to scale quite 
> well, although we are still in the tuning phase.
Sounds like a good datapoint.  Thanks!
> Each user has their own set of databases though, so there is way less 
> replication needed and chance of conflicts, than if you were to have 
> one global database that thousands of nodes all replicate between 
> eachother.
We're in a situation where we're supporting small-to-mid-sized groups, 
each with their own set of documents (think workgroups in a large 
corporation).  A particular database would be replicated across anywhere 
from 10 to 100 machines - individual laptops and desktops, plus 
workgroup servers.  I'm thinking that each user would synchronize with a 
local workgroup server, and the workgroup servers would synchronize with 
each other.


In theory, there is no difference between theory and practice.
In<fnord>  practice, there is.   .... Yogi Berra

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