How to avoid duplicate entries in DNS Bind cache db file?

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While running command "rndc dumpdb -cache" it has huge amount of data some duplicate entries like one domain has multiple entries with same target but different TTL, how to reduce like update only requires those parts which are new or haven been changed from the previous state.

Basically exporting output file to Prometheus.

I sit in a Tesla and translated this thread with Ai:


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