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PSA: A reminder about WEBrick's :DoNotReverseLookup config option

by vais —

Unless you remember to put :DoNotReverseLookup => true into your WEBrick config, reverse DNS lookup will happen for every incoming connection, potentially causing serious latency. My story: WEBrick and Socket.do_not_reverse_lookup: A Tale in Two Acts Technical details: Fix regression bug in WEBrick’s :DoNotReverseLookup config option implementation

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