Multiple core solr support

[Timo Sirainen]

> On 11 Oct 2015, at 08:42, Daniel Miller <dmiller at amfes.com> wrote:
> 
> Is it possible to use variables, such as domain or username, in the plugin url declaration?  This would allow using multiple cores to separate the stored indexes.  So when my own giant mailbox gets corrupt...I don't have to rebuild everybody's...
> 
> Something like url=http://mysolr.server.com:8983/solr/%u

Exactly that. Or things like http://mysolr%4Nu.server.com to have it use mysolr0..3.server.com based on the username hash.