Leif Hedstrom created TS-4292:
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             Summary: header_rewrite: Modify the Resource object to be non-const
                 Key: TS-4292
                 URL: https://issues.apache.org/jira/browse/TS-4292
             Project: Traffic Server
          Issue Type: Improvement
          Components: Plugins
            Reporter: Leif Hedstrom


If we make the Resource object mutable (it's per transaction / evaluation), we 
can move some state into it for evaluation. In addition to fixing a tiny race 
condition in the RAND operator, we can then also "cache" intermediate results, 
that might be computationally expensive (such as Maxmind GeoIP lookups).



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