The CPU Cost of Signing NXDOMAINs

DEV CommunityThursday, October 30, 2025 at 7:12:11 PM
The CPU Cost of Signing NXDOMAINs
A recent analysis highlights the significant CPU cost differences between signing NXDOMAINs using RSA and ECDSA in CoreDNS. The findings reveal that RSA requires 30 times more CPU resources than ECDSA for the same workload. This matters because optimizing DNSSEC implementations can lead to more efficient server performance and reduced operational costs, making it crucial for organizations relying on DNS security.
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