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From Erick Erickson <>
Subject Re: a core for every user, lots of users... are there issues
Date Tue, 03 Dec 2013 20:20:54 GMT
You probably want to look at "transient cores", see:

But millions will be "interesting" for a single node, you must have some
kind of partitioning in mind?


On Tue, Dec 3, 2013 at 2:38 PM, hank williams <> wrote:

>  We are building a system where there is a core for every user. There will
> be many tens or perhaps ultimately hundreds of thousands or millions of
> users. We do not need each of those users to have “warm” data in memory. In
> fact doing so would consume lots of memory unnecessarily, for users that
> might not have logged in in a long time.
> So my question is, is the default behavior of Solr to try to keep all of
> our cores warm, and if so, can we stop it? Also given the number of cores
> that we will likely have is there anything else we should be keeping in
> mind to maximize performance and minimize memory usage?

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