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https://issues.apache.org/jira/browse/SOLR-12405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16491758#comment-16491758
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Mark Miller commented on SOLR-12405:
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I started playing with this in my HTTP/2 branch:
https://github.com/markrmiller/lucene-solr/blob/http2/solr/core/src/java/org/apache/solr/servlet/SolrQoSFilter.java
In terms of keeping resources under control, pretty effective.
> Add a quality of service type filter for request load management and request
> throttling.
> ----------------------------------------------------------------------------------------
>
> Key: SOLR-12405
> URL: https://issues.apache.org/jira/browse/SOLR-12405
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Mark Miller
> Priority: Major
>
> Trying to manage resource usage just with thread / connection pool limits is
> a losing strategy ( especially without using Continuations and making
> scalability vs performance tradeoffs) if you cannot manage requests.
> A QOSFilter type servlet filter with give us some base functionality we want:
> Ability to limit number of concurrent requests.
> Ability to queue requests without holding a thread per request.
> Ability to drop requests over a certain queue size.
> Ability to prioritize requests on the queue.
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