[asterisk-bugs] [JIRA] (ASTERISK-25570) DNS: Implement negative connection cache

[Ashley Sanders (JIRA)]

Ashley Sanders created ASTERISK-25570:
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             Summary: DNS: Implement negative connection cache
                 Key: ASTERISK-25570
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25570
             Project: Asterisk
          Issue Type: Improvement
      Security Level: None
          Components: Core/DNS
            Reporter: Ashley Sanders
            Severity: Critical


What is this? If Asterisk is told to look up a domain, and that domain does not resolve, then Asterisk will temporarily return an error when that domain is looked up. This way, if tons of lookups are attempted, only the first will take time to fail. All subsequent ones will result in an immediate failure since we have cached the failure locally.




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