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https://issues.apache.org/jira/browse/SOLR-919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Noble Paul updated SOLR-919:
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      Description: 
If there are 1000's of cores the no:of times we need to load and parse the 
solrconfig.xml is going to be very expensive. It is desirable to just create 
one instance of SolrConfig object and re-use it across cores




  was:
If there are 1000's of cores the no:of times we need to load and parse the 
solrconfig.xml is going to be very expensive. In such a case we may mostly have 
same solrconfig.xml with some core properties embedded

The solution is  , if the location of the xml file is same (on disk) let us 
keep only one DOM object and reuse it for every other cores. So we can keep a 
cache at the CoreContainer level .

We save file reading , XML parsing and RAM in one go

The only challenge here is that it is we currently substitute core properties 
at read time. We will have to postpone this to consumption time. So whenever we 
read the values from the DOM the values can be substituted and used



    Fix Version/s: 1.5
         Assignee: Noble Paul
          Summary: Cache and reuse the SolrConfig  (was: Cache and reuse the 
DOM object of solrconfig.xml)

> Cache and reuse the SolrConfig
> ------------------------------
>
>                 Key: SOLR-919
>                 URL: https://issues.apache.org/jira/browse/SOLR-919
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Noble Paul
>            Assignee: Noble Paul
>             Fix For: 1.5
>
>
> If there are 1000's of cores the no:of times we need to load and parse the 
> solrconfig.xml is going to be very expensive. It is desirable to just create 
> one instance of SolrConfig object and re-use it across cores

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