Your old Let's Encrypt certificate may slow your Go app downblog.espe.tech 1 pointlnsp4 years ago1 commentSaveHideCopy link On HNComments−lnspOP4yTLDR: Your Let's Encrypt certificate may have an RSA private key. Go's TLS implementation is far better optimized for ECDSA keys. Switching from RSA to ECDSA saves about 95% of CPU cycles due to the better implementation.
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TLDR: Your Let's Encrypt certificate may have an RSA private key. Go's TLS implementation is far better optimized for ECDSA keys. Switching from RSA to ECDSA saves about 95% of CPU cycles due to the better implementation.