Jason Gerlowski created SOLR-17277:
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Summary: Circuit Breakers should support a "Warn-only" mode
Key: SOLR-17277
URL: https://issues.apache.org/jira/browse/SOLR-17277
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Components: Circuit Breakers
Affects Versions: main (10.0)
Reporter: Jason Gerlowski
The threshold values used when configuring Circuit Breakers are incredibly
important. Identifying when load begins to get "dangerous" is tricky: too
stringent and users will get 429s unnecessarily, too lax and the circuit
breakers won't be effective at preventing crashes.
Conservative users may wish to evaluate potential thresholds without actually
blocking traffic. Could Circuit Breakers offer some sort of "Dry Run"
capability - where a request that would otherwise have been blocked merely logs
a message? This would allow users to get feedback on their thresholds before
they actually start sending CB-based 429s to users.
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